From 7911783ff79adfc34e1decde2dda85417fc406aa Mon Sep 17 00:00:00 2001
From: Zhang Zhiyao <zzy1007102679@gmail.com>
Date: Wed, 3 Nov 2021 15:13:48 +0800
Subject: [PATCH 1/5] update java doc

---
 docs/UserGuide.md                             |  2 +-
 .../seedu/address/commons/core/Config.java    | 35 +++++++++++++++++--
 .../address/commons/core/GuiSettings.java     | 17 +++++++++
 .../address/commons/core/index/Index.java     | 25 ++++++++++++-
 4 files changed, 75 insertions(+), 4 deletions(-)

diff --git a/docs/UserGuide.md b/docs/UserGuide.md
index e774f75c773..f43f4640ac2 100644
--- a/docs/UserGuide.md
+++ b/docs/UserGuide.md
@@ -364,7 +364,7 @@ If your changes to the data file makes its format invalid, ezFoodie will discard
 ## FAQ
 
 **Q**: How do I transfer my data to another Computer?<br>
-**A**: Install the application in the other computer and overwrite the empty data file it creates with the file that contains the data of your previous AddressBook home folder.
+**A**: Install the application in the other computer and overwrite the empty data file it creates with the file that contains the data of your previous ezFoodie home folder.
 
 --------------------------------------------------------------------------------------------------------------------
 
diff --git a/src/main/java/seedu/address/commons/core/Config.java b/src/main/java/seedu/address/commons/core/Config.java
index 91145745521..09d2f647eeb 100644
--- a/src/main/java/seedu/address/commons/core/Config.java
+++ b/src/main/java/seedu/address/commons/core/Config.java
@@ -6,32 +6,55 @@
 import java.util.logging.Level;
 
 /**
- * Config values used by the app
+ * Config values used by the application
  */
 public class Config {
-
+    /**
+     * Gets the default congig json file
+     */
     public static final Path DEFAULT_CONFIG_FILE = Paths.get("config.json");
 
     // Config values customizable through config file
     private Level logLevel = Level.INFO;
     private Path userPrefsFilePath = Paths.get("preferences.json");
 
+    /**
+     * Gets Log Level
+     * @return Level
+     */
     public Level getLogLevel() {
         return logLevel;
     }
 
+    /**
+     * Sets Log Level
+     * @param logLevel
+     */
     public void setLogLevel(Level logLevel) {
         this.logLevel = logLevel;
     }
 
+    /**
+     * Gets User Prefs File Path
+     * @return Path
+     */
     public Path getUserPrefsFilePath() {
         return userPrefsFilePath;
     }
 
+    /**
+     * Sets User Prefs File Path
+     * @param userPrefsFilePath
+     */
     public void setUserPrefsFilePath(Path userPrefsFilePath) {
         this.userPrefsFilePath = userPrefsFilePath;
     }
 
+    /**
+     * Overrides the equal method
+     * @param other
+     * @return boolean
+     */
     @Override
     public boolean equals(Object other) {
         if (other == this) {
@@ -47,11 +70,19 @@ public boolean equals(Object other) {
                 && Objects.equals(userPrefsFilePath, o.userPrefsFilePath);
     }
 
+    /**
+     * Overrides hashcode method
+     * @return int
+     */
     @Override
     public int hashCode() {
         return Objects.hash(logLevel, userPrefsFilePath);
     }
 
+    /**
+     * Overrides toString method
+     * @return String the log level and Config file location
+     */
     @Override
     public String toString() {
         StringBuilder sb = new StringBuilder();
diff --git a/src/main/java/seedu/address/commons/core/GuiSettings.java b/src/main/java/seedu/address/commons/core/GuiSettings.java
index ba33653be67..916f29b9383 100644
--- a/src/main/java/seedu/address/commons/core/GuiSettings.java
+++ b/src/main/java/seedu/address/commons/core/GuiSettings.java
@@ -35,18 +35,35 @@ public GuiSettings(double windowWidth, double windowHeight, int xPosition, int y
         windowCoordinates = new Point(xPosition, yPosition);
     }
 
+    /**
+     * Gets GUI window width
+     * @return double the width of window
+     */
     public double getWindowWidth() {
         return windowWidth;
     }
 
+    /**
+     * Gets GUI window height
+     * @return double the height of window
+     */
     public double getWindowHeight() {
         return windowHeight;
     }
 
+    /**
+     * Gets GUI window coordinates
+     * @return Point
+     */
     public Point getWindowCoordinates() {
         return windowCoordinates != null ? new Point(windowCoordinates) : null;
     }
 
+    /**
+     * Overrides the equal method for comparing
+     * @param other
+     * @return
+     */
     @Override
     public boolean equals(Object other) {
         if (other == this) {
diff --git a/src/main/java/seedu/address/commons/core/index/Index.java b/src/main/java/seedu/address/commons/core/index/Index.java
index 19536439c09..48c3458bfe5 100644
--- a/src/main/java/seedu/address/commons/core/index/Index.java
+++ b/src/main/java/seedu/address/commons/core/index/Index.java
@@ -6,13 +6,14 @@
  * {@code Index} should be used right from the start (when parsing in a new user input), so that if the current
  * component wants to communicate with another component, it can send an {@code Index} to avoid having to know what
  * base the other component is using for its index. However, after receiving the {@code Index}, that component can
- * convert it back to an int if the index will not be passed to a different component again.
+ * convert it back to an integer if the index will not be passed to a different component again.
  */
 public class Index {
     private int zeroBasedIndex;
 
     /**
      * Index can only be created by calling {@link Index#fromZeroBased(int)} or
+     *
      * {@link Index#fromOneBased(int)}.
      */
     private Index(int zeroBasedIndex) {
@@ -23,16 +24,29 @@ private Index(int zeroBasedIndex) {
         this.zeroBasedIndex = zeroBasedIndex;
     }
 
+    /**
+     * Gets zero based integer
+     *
+     * @return Zero Based index
+     */
     public int getZeroBased() {
         return zeroBasedIndex;
     }
 
+    /**
+     * Gets one based integer
+     *
+     * @return Get one based integer
+     */
     public int getOneBased() {
         return zeroBasedIndex + 1;
     }
 
     /**
      * Creates a new {@code Index} using a zero-based index.
+     *
+     * @param zeroBasedIndex
+     * @return Index of zeroBasedIndex
      */
     public static Index fromZeroBased(int zeroBasedIndex) {
         return new Index(zeroBasedIndex);
@@ -40,11 +54,20 @@ public static Index fromZeroBased(int zeroBasedIndex) {
 
     /**
      * Creates a new {@code Index} using a one-based index.
+     *
+     * @param oneBasedIndex
+     * @return Index of oneBasedIndex
      */
     public static Index fromOneBased(int oneBasedIndex) {
         return new Index(oneBasedIndex - 1);
     }
 
+    /**
+     * Overrides the equal method
+     *
+     * @param other
+     * @return Boolean
+     */
     @Override
     public boolean equals(Object other) {
         return other == this // short circuit if same object

From b21a039dfa4e2d0bae078a90691081275e5549ea Mon Sep 17 00:00:00 2001
From: Zhang Zhiyao <zzy1007102679@gmail.com>
Date: Thu, 4 Nov 2021 04:00:13 +0800
Subject: [PATCH 2/5] javadoc until to reservations

---
 .../seedu/address/commons/core/Config.java    | 25 ++++--
 .../address/commons/core/GuiSettings.java     | 24 +++--
 .../seedu/address/commons/core/Messages.java  | 32 ++++++-
 .../seedu/address/commons/core/Version.java   | 48 +++++++++-
 .../exceptions/PermissionException.java       |  4 +
 .../commons/status/ExecutionStatus.java       |  3 +
 .../address/commons/status/LoginStatus.java   | 13 ++-
 .../address/commons/status/SortStatus.java    |  3 +
 .../seedu/address/logic/LogicManager.java     | 89 +++++++++++++++++++
 .../address/logic/commands/AddCommand.java    | 14 +++
 .../logic/commands/AddMemberCommand.java      | 19 +++-
 .../logic/commands/AddReservationCommand.java | 27 +++++-
 .../logic/commands/AddTransactionCommand.java | 25 +++++-
 .../address/logic/commands/ClearCommand.java  | 13 +++
 .../address/logic/commands/CommandResult.java | 32 +++++++
 .../address/logic/commands/DeleteCommand.java | 14 +++
 .../logic/commands/DeleteMemberCommand.java   | 30 ++++++-
 .../commands/DeleteReservationCommand.java    | 33 ++++++-
 .../commands/DeleteTransactionCommand.java    | 33 ++++++-
 .../address/logic/commands/EditCommand.java   | 14 +++
 .../logic/commands/EditMemberCommand.java     | 86 ++++++++++++++++++
 .../commands/EditReservationCommand.java      | 65 +++++++++++++-
 .../commands/EditTransactionCommand.java      | 61 ++++++++++++-
 .../address/logic/commands/ExitCommand.java   | 12 +++
 .../address/logic/commands/FindCommand.java   | 43 +++++++++
 .../address/logic/commands/HelpCommand.java   | 15 ++++
 .../address/logic/commands/ListCommand.java   | 22 ++++-
 .../address/logic/commands/LoginCommand.java  | 28 ++++++
 .../address/logic/commands/LogoutCommand.java | 17 ++++
 .../address/logic/commands/RedeemCommand.java | 42 ++++++++-
 .../address/logic/commands/SortCommand.java   | 30 +++++++
 .../logic/commands/SummaryCommand.java        | 21 +++++
 .../address/logic/commands/ViewCommand.java   | 22 +++++
 .../commands/exceptions/CommandException.java | 11 +++
 .../logic/parser/AddCommandParser.java        |  3 +
 .../logic/parser/AddMemberCommandParser.java  |  3 +
 .../parser/AddReservationCommandParser.java   |  3 +
 .../parser/AddTransactionCommandParser.java   |  3 +
 .../seedu/address/logic/parser/CliSyntax.java | 70 +++++++++++++++
 .../parser/DeleteMemberCommandParser.java     |  3 +
 .../DeleteReservationCommandParser.java       |  4 +-
 .../DeleteTransactionCommandParser.java       |  3 +
 .../logic/parser/EditCommandParser.java       |  3 +
 .../logic/parser/EditMemberCommandParser.java |  3 +
 .../parser/EditReservationCommandParser.java  |  3 +
 .../parser/EditTransactionCommandParser.java  |  7 +-
 .../logic/parser/FindCommandParser.java       |  3 +
 .../logic/parser/ListCommandParser.java       |  3 +
 .../logic/parser/LoginCommandParser.java      |  3 +
 .../seedu/address/logic/parser/Prefix.java    | 22 +++++
 .../logic/parser/RedeemCommandParser.java     | 10 ++-
 .../logic/parser/SortCommandParser.java       |  3 +
 .../logic/parser/ViewCommandParser.java       |  2 +
 .../parser/exceptions/ParseException.java     | 12 ++-
 .../seedu/address/model/account/Password.java | 31 +++++++
 .../seedu/address/model/member/Address.java   | 24 ++++-
 .../seedu/address/model/member/Credit.java    | 45 +++++++++-
 .../model/member/CreditSortComparator.java    | 22 +++++
 .../seedu/address/model/member/Email.java     | 28 +++++-
 .../EmailContainsKeywordsPredicate.java       | 16 ++++
 .../java/seedu/address/model/member/Id.java   | 36 ++++++++
 .../member/IdContainsKeywordsPredicate.java   | 16 ++++
 .../seedu/address/model/member/Member.java    | 59 ++++++++++++
 .../java/seedu/address/model/member/Name.java | 25 +++++-
 .../member/NameContainsKeywordsPredicate.java | 16 ++++
 .../seedu/address/model/member/Phone.java     | 20 ++++-
 .../PhoneContainsKeywordsPredicate.java       | 16 ++++
 .../seedu/address/model/member/Point.java     | 41 ++++++++-
 ...strationDateContainsKeywordsPredicate.java | 16 ++++
 .../model/member/UniqueMemberList.java        | 42 +++++++++
 .../exceptions/DuplicateMemberException.java  |  3 +
 .../address/model/reservation/DateTime.java   | 30 ++++++-
 .../seedu/address/model/reservation/Id.java   | 36 ++++++++
 73 files changed, 1604 insertions(+), 54 deletions(-)

diff --git a/src/main/java/seedu/address/commons/core/Config.java b/src/main/java/seedu/address/commons/core/Config.java
index 09d2f647eeb..a88bc3c50de 100644
--- a/src/main/java/seedu/address/commons/core/Config.java
+++ b/src/main/java/seedu/address/commons/core/Config.java
@@ -10,7 +10,7 @@
  */
 public class Config {
     /**
-     * Gets the default congig json file
+     * Gets the default config json file.
      */
     public static final Path DEFAULT_CONFIG_FILE = Paths.get("config.json");
 
@@ -19,7 +19,8 @@ public class Config {
     private Path userPrefsFilePath = Paths.get("preferences.json");
 
     /**
-     * Gets Log Level
+     * Gets Log Level.
+     * 
      * @return Level
      */
     public Level getLogLevel() {
@@ -27,7 +28,8 @@ public Level getLogLevel() {
     }
 
     /**
-     * Sets Log Level
+     * Sets Log Level.
+     *
      * @param logLevel
      */
     public void setLogLevel(Level logLevel) {
@@ -35,7 +37,8 @@ public void setLogLevel(Level logLevel) {
     }
 
     /**
-     * Gets User Prefs File Path
+     * Gets User Prefs File Path.
+     *
      * @return Path
      */
     public Path getUserPrefsFilePath() {
@@ -43,7 +46,8 @@ public Path getUserPrefsFilePath() {
     }
 
     /**
-     * Sets User Prefs File Path
+     * Sets User Prefs File Path.
+     *
      * @param userPrefsFilePath
      */
     public void setUserPrefsFilePath(Path userPrefsFilePath) {
@@ -51,7 +55,8 @@ public void setUserPrefsFilePath(Path userPrefsFilePath) {
     }
 
     /**
-     * Overrides the equal method
+     * Overrides the equal method for Config class.
+     *
      * @param other
      * @return boolean
      */
@@ -71,8 +76,9 @@ public boolean equals(Object other) {
     }
 
     /**
-     * Overrides hashcode method
-     * @return int
+     * Overrides hashcode method for Config class.
+     *
+     * @return int objects after hashed with logLevel and userPrefsFilePath
      */
     @Override
     public int hashCode() {
@@ -80,7 +86,8 @@ public int hashCode() {
     }
 
     /**
-     * Overrides toString method
+     * Overrides toString method for Config class.
+     *
      * @return String the log level and Config file location
      */
     @Override
diff --git a/src/main/java/seedu/address/commons/core/GuiSettings.java b/src/main/java/seedu/address/commons/core/GuiSettings.java
index 916f29b9383..3c900ef379a 100644
--- a/src/main/java/seedu/address/commons/core/GuiSettings.java
+++ b/src/main/java/seedu/address/commons/core/GuiSettings.java
@@ -36,7 +36,8 @@ public GuiSettings(double windowWidth, double windowHeight, int xPosition, int y
     }
 
     /**
-     * Gets GUI window width
+     * Gets GUI window width.
+     *
      * @return double the width of window
      */
     public double getWindowWidth() {
@@ -44,7 +45,8 @@ public double getWindowWidth() {
     }
 
     /**
-     * Gets GUI window height
+     * Gets GUI window height.
+     *
      * @return double the height of window
      */
     public double getWindowHeight() {
@@ -52,7 +54,8 @@ public double getWindowHeight() {
     }
 
     /**
-     * Gets GUI window coordinates
+     * Gets GUI window coordinates.
+     *
      * @return Point
      */
     public Point getWindowCoordinates() {
@@ -60,9 +63,10 @@ public Point getWindowCoordinates() {
     }
 
     /**
-     * Overrides the equal method for comparing
+     * Overrides the equal method for GuiSettings.
+     *
      * @param other
-     * @return
+     * @return boolean
      */
     @Override
     public boolean equals(Object other) {
@@ -80,11 +84,21 @@ public boolean equals(Object other) {
                 && Objects.equals(windowCoordinates, o.windowCoordinates);
     }
 
+    /**
+     * Overrides the hashCode method
+     *
+     * @return int objects after hashed with windowWidth, windowHeight and windowCoordinates.
+     */
     @Override
     public int hashCode() {
         return Objects.hash(windowWidth, windowHeight, windowCoordinates);
     }
 
+    /**
+     * Overrides the toString Method for GuiSettings.
+     *
+     * @return String including all width, height and Position
+     */
     @Override
     public String toString() {
         StringBuilder sb = new StringBuilder();
diff --git a/src/main/java/seedu/address/commons/core/Messages.java b/src/main/java/seedu/address/commons/core/Messages.java
index 2ca42ee4357..b084f206252 100644
--- a/src/main/java/seedu/address/commons/core/Messages.java
+++ b/src/main/java/seedu/address/commons/core/Messages.java
@@ -6,14 +6,44 @@
  * Container for user visible messages.
  */
 public class Messages {
-
+    /**
+     * Represents the MESSAGE_UNKNOWN_COMMAND.
+     */
     public static final String MESSAGE_UNKNOWN_COMMAND = "Unknown command";
+
+    /**
+     * Represents the MESSAGE_INVALID_COMMAND_FORMAT.
+     */
     public static final String MESSAGE_INVALID_COMMAND_FORMAT = "Invalid command format! \n%1$s";
+
+    /**
+     * Represents the MESSAGE_INVALID_MEMBER_DISPLAYED_INDEX.
+     */
     public static final String MESSAGE_INVALID_MEMBER_DISPLAYED_INDEX = "The member index provided is invalid";
+
+    /**
+     * Represents the MESSAGE_INVALID_MEMBER_DISPLAYED_ID.
+     */
     public static final String MESSAGE_INVALID_MEMBER_DISPLAYED_ID = "The member ID provided is invalid";
+
+    /**
+     * Represents the MESSAGE_INVALID_TRANSACTION_DISPLAYED_ID.
+     */
     public static final String MESSAGE_INVALID_TRANSACTION_DISPLAYED_ID = "The transaction ID provided is invalid";
+
+    /**
+     * Represents the MESSAGE_INVALID_RESERVATION_DISPLAYED_ID.
+     */
     public static final String MESSAGE_INVALID_RESERVATION_DISPLAYED_ID = "The reservation ID provided is invalid";
+
+    /**
+     * Represents the MESSAGE_MEMBERS_LISTED_OVERVIEW.
+     */
     public static final String MESSAGE_MEMBERS_LISTED_OVERVIEW = "%1$d members listed!";
+
+    /**
+     * Represents the MESSAGE_PERMISSION_DENIED.
+     */
     public static final String MESSAGE_PERMISSION_DENIED = "Permission denied! Please login as " + LoginStatus.MANAGER;
 
 }
diff --git a/src/main/java/seedu/address/commons/core/Version.java b/src/main/java/seedu/address/commons/core/Version.java
index 12142ec1e32..595c2696d51 100644
--- a/src/main/java/seedu/address/commons/core/Version.java
+++ b/src/main/java/seedu/address/commons/core/Version.java
@@ -7,10 +7,13 @@
 import com.fasterxml.jackson.annotation.JsonValue;
 
 /**
- * Represents a version with major, minor and patch number
+ * Represents a version with major, minor and patch number.
  */
 public class Version implements Comparable<Version> {
 
+    /**
+     * Sets the VERSION_REGEX.
+     */
     public static final String VERSION_REGEX = "V(\\d+)\\.(\\d+)\\.(\\d+)(ea)?";
 
     private static final String EXCEPTION_STRING_NOT_VERSION = "String is not a valid Version. %s";
@@ -32,24 +35,45 @@ public Version(int major, int minor, int patch, boolean isEarlyAccess) {
         this.isEarlyAccess = isEarlyAccess;
     }
 
+    /**
+     * Gets the major.
+     *
+     * @return int
+     */
     public int getMajor() {
         return major;
     }
 
+    /**
+     * Gets the minor.
+     *
+     * @return int
+     */
     public int getMinor() {
         return minor;
     }
 
+    /**
+     * Gets the patch.
+     *
+     * @return int
+     */
     public int getPatch() {
         return patch;
     }
 
+    /**
+     * Judges the isEarlyAccess.
+     *
+     * @return int
+     */
     public boolean isEarlyAccess() {
         return isEarlyAccess;
     }
 
     /**
      * Parses a version number string in the format V1.2.3.
+     *
      * @param versionString version number string
      * @return a Version object
      */
@@ -67,11 +91,22 @@ public static Version fromString(String versionString) throws IllegalArgumentExc
                 versionMatcher.group(4) == null ? false : true);
     }
 
+    /**
+     * Overrides the toString for Version class.
+     *
+     * @return String for Version
+     */
     @JsonValue
     public String toString() {
         return String.format("V%d.%d.%d%s", major, minor, patch, isEarlyAccess ? "ea" : "");
     }
 
+    /**
+     * Overrides the compareTo method for Version class.
+     *
+     * @param other
+     * @return int
+     */
     @Override
     public int compareTo(Version other) {
         if (major != other.major) {
@@ -92,6 +127,12 @@ public int compareTo(Version other) {
         return 1;
     }
 
+    /**
+     * Overrides the equal method for Version class.
+     *
+     * @param obj
+     * @return boolean
+     */
     @Override
     public boolean equals(Object obj) {
         if (obj == null) {
@@ -105,6 +146,11 @@ public boolean equals(Object obj) {
         return compareTo(other) == 0;
     }
 
+    /**
+     * Overrides the hashCode for Version class.
+     *
+     * @return int
+     */
     @Override
     public int hashCode() {
         String hash = String.format("%03d%03d%03d", major, minor, patch);
diff --git a/src/main/java/seedu/address/commons/exceptions/PermissionException.java b/src/main/java/seedu/address/commons/exceptions/PermissionException.java
index 83e9eec26d3..604e54a1f1b 100644
--- a/src/main/java/seedu/address/commons/exceptions/PermissionException.java
+++ b/src/main/java/seedu/address/commons/exceptions/PermissionException.java
@@ -4,6 +4,10 @@
  * Represents an error during insufficient permission.
  */
 public class PermissionException extends Exception {
+
+    /**
+     * @param message should contain relevant information on the failed constraint(s)
+     */
     public PermissionException(String message) {
         super(message);
     }
diff --git a/src/main/java/seedu/address/commons/status/ExecutionStatus.java b/src/main/java/seedu/address/commons/status/ExecutionStatus.java
index 370b6a0c8f0..b766a6961a9 100644
--- a/src/main/java/seedu/address/commons/status/ExecutionStatus.java
+++ b/src/main/java/seedu/address/commons/status/ExecutionStatus.java
@@ -1,5 +1,8 @@
 package seedu.address.commons.status;
 
+/**
+ * Represents the ExecutionStatus.
+ */
 public enum ExecutionStatus {
     NORMAL, TEST
 }
diff --git a/src/main/java/seedu/address/commons/status/LoginStatus.java b/src/main/java/seedu/address/commons/status/LoginStatus.java
index f4c8053b1bb..7ab37494450 100644
--- a/src/main/java/seedu/address/commons/status/LoginStatus.java
+++ b/src/main/java/seedu/address/commons/status/LoginStatus.java
@@ -2,21 +2,32 @@
 
 import javafx.beans.property.SimpleStringProperty;
 
+/**
+ * Represents the Execution Status.
+ */
 public enum LoginStatus {
 
     STAFF("STAFF"),
     MANAGER("MANAGER");
 
+    /**
+     * Represents the static the simple string property.
+     */
     public static final SimpleStringProperty CURRENT_STATUS = new SimpleStringProperty(STAFF.value);
 
     private final String value;
 
+    /**
+     * Constructs {@code LoginStatus} with the given value.
+     */
     LoginStatus(String value) {
         this.value = value;
     }
 
     /**
-     * Returns {@code LoginStatus}.
+     * Gets login status.
+     *
+     * Returns {@code LoginStatus}
      */
     public static LoginStatus getLoginStatus() {
         if (CURRENT_STATUS.getValue().equals(STAFF.value)) {
diff --git a/src/main/java/seedu/address/commons/status/SortStatus.java b/src/main/java/seedu/address/commons/status/SortStatus.java
index afc6dda7238..bf9aa4874df 100644
--- a/src/main/java/seedu/address/commons/status/SortStatus.java
+++ b/src/main/java/seedu/address/commons/status/SortStatus.java
@@ -1,5 +1,8 @@
 package seedu.address.commons.status;
 
+/**
+ * Represents the Sort Status.
+ */
 public enum SortStatus {
     ASC, DESC
 }
diff --git a/src/main/java/seedu/address/logic/LogicManager.java b/src/main/java/seedu/address/logic/LogicManager.java
index ede4fb671b4..cc533f05e06 100644
--- a/src/main/java/seedu/address/logic/LogicManager.java
+++ b/src/main/java/seedu/address/logic/LogicManager.java
@@ -49,6 +49,15 @@ public LogicManager(Model model, Storage storage, ExecutionStatus executionStatu
         ezFoodieParser = new EzFoodieParser(model, executionStatus);
     }
 
+    /**
+     * Executes with given string of command text.
+     *
+     * @param commandText The command as entered by the user.
+     * @return {@code CommandResult}
+     * @throws CommandException
+     * @throws ParseException
+     * @throws PermissionException
+     */
     @Override
     public CommandResult execute(String commandText) throws CommandException, ParseException, PermissionException {
         logger.info("----------------[USER COMMAND][" + commandText + "]");
@@ -66,81 +75,161 @@ public CommandResult execute(String commandText) throws CommandException, ParseE
         return commandResult;
     }
 
+    /**
+     * Gets EzFoodie.
+     *
+     * @return ReadOnlyEzFoodie
+     */
     @Override
     public ReadOnlyEzFoodie getEzFoodie() {
         return model.getEzFoodie();
     }
 
+    /**
+     * Gets updated member list.
+     *
+     * @return ObservableList
+     */
     @Override
     public ObservableList<Member> getUpdatedMemberList() {
         return model.getUpdatedMemberList();
     }
 
+    /**
+     * Gets updated member list for view.
+     *
+     * @return ObservableList
+     */
     @Override
     public ObservableList<Member> getUpdatedMemberListForView () {
         return model.getUpdatedMemberListForView();
     }
 
+    /**
+     * Gets number of members.
+     *
+     * @return int
+     */
     @Override
     public int getNumberOfMembers() {
         return model.getNumberOfMembers();
     }
 
+    /**
+     * Gets number of members by tier.
+     *
+     * @return HashMap
+     */
     @Override
     public HashMap<String, Integer> getNumberOfMembersByTiers() {
         return model.getNumberOfMembersByTiers();
     }
 
+    /**
+     * Gets number of transactions.
+     *
+     * @return int
+     */
     @Override
     public int getNumberOfTransactions() {
         return model.getNumberOfTransactions();
     }
 
+    /**
+     * Gets number of transactions in the past month.
+     *
+     * @return int
+     */
     @Override
     public int getNumberOfTransactionsPastMonth() {
         return model.getNumberOfTransactionsPastMonth();
     }
 
+    /**
+     * Gets number of transaction in past three months.
+     *
+     * @return int
+     */
     @Override
     public int getNumberOfTransactionsPastThreeMonth() {
         return model.getNumberOfTransactionsPastThreeMonth();
     }
 
+    /**
+     * Gets number of transactions in past six months.
+     *
+     * @return int
+     */
     @Override
     public int getNumberOfTransactionsPastSixMonths() {
         return model.getNumberOfTransactionsPastSixMonth();
     }
 
+    /**
+     * Gets total amount of transactions.
+     *
+     * @return double
+     */
     @Override
     public double getTotalAmountOfTransactions() {
         return model.getTotalAmountOfTransactions();
     }
 
+    /**
+     * Gets total amount of transactions in the past month.
+     *
+     * @return double
+     */
     @Override
     public double getTotalAmountOfTransactionsPastMonth() {
         return model.getTotalAmountOfTransactionsPastMonth();
     }
 
+    /**
+     * Gets total amount of transactions in the past three months.
+     *
+     * @return double
+     */
     @Override
     public double getTotalAmountOfTransactionsPastThreeMonth() {
         return model.getTotalAmountOfTransactionsPastThreeMonth();
     }
 
+    /**
+     * Gets total amount of transactions in the past six months.
+     *
+     * @return double
+     */
     @Override
     public double getTotalAmountOfTransactionsPastSixMonth() {
         return model.getTotalAmountOfTransactionsPastSixMonth();
     }
 
+    /**
+     * Gets EzFoodie Path.
+     *
+     * @return Path
+     */
     @Override
     public Path getEzFoodieFilePath() {
         return model.getEzFoodieFilePath();
     }
 
+    /**
+     * Gets Gui Settings.
+     *
+     * @return
+     */
     @Override
     public GuiSettings getGuiSettings() {
         return model.getGuiSettings();
     }
 
+    /**
+     * Sets Gui settings.
+     *
+     * @param guiSettings
+     */
     @Override
     public void setGuiSettings(GuiSettings guiSettings) {
         model.setGuiSettings(guiSettings);
diff --git a/src/main/java/seedu/address/logic/commands/AddCommand.java b/src/main/java/seedu/address/logic/commands/AddCommand.java
index 2e6485429e3..8dabbf2f2cf 100644
--- a/src/main/java/seedu/address/logic/commands/AddCommand.java
+++ b/src/main/java/seedu/address/logic/commands/AddCommand.java
@@ -11,12 +11,26 @@
  */
 public abstract class AddCommand extends Command {
 
+    /**
+     * Stands for COMMAND WORD for add command.
+     */
     public static final String COMMAND_WORD = "add";
+
+    /**
+     * Stands for output message.
+     */
     public static final String MESSAGE_USAGE = COMMAND_WORD + ": Adds a member or a transaction to the ezFoodie.\n"
             + "With "
             + PREFIX_MEMBER + " (member details) or "
             + PREFIX_TRANSACTION + " (transaction details)";
 
+    /**
+     * Overrides the execute method for addCommand class to execute model.
+     *
+     * @param model {@code Model} which the command should operate on.
+     * @return CommandResult for execute addCommand
+     * @throws CommandException
+     */
     @Override
     public abstract CommandResult execute(Model model) throws CommandException;
 
diff --git a/src/main/java/seedu/address/logic/commands/AddMemberCommand.java b/src/main/java/seedu/address/logic/commands/AddMemberCommand.java
index a543f4ed5d3..8e3196246d8 100644
--- a/src/main/java/seedu/address/logic/commands/AddMemberCommand.java
+++ b/src/main/java/seedu/address/logic/commands/AddMemberCommand.java
@@ -17,6 +17,9 @@
  */
 public class AddMemberCommand extends AddCommand {
 
+    /**
+     * Stands for COMMAND WORD for add member.
+     */
     public static final String MESSAGE_USAGE = COMMAND_WORD + ": Adds a member to the ezFoodie. "
             + "Parameters: "
             + PREFIX_MEMBER + " "
@@ -40,13 +43,20 @@ public class AddMemberCommand extends AddCommand {
     private final Member toAdd;
 
     /**
-     * Creates an AddMemberCommand to add the specified {@code Member}
+     * Creates an AddMemberCommand to add the specified {@code Member}.
      */
     public AddMemberCommand(Member member) {
         requireNonNull(member);
         toAdd = member;
     }
 
+    /**
+     * Overrides and executes model.
+     *
+     * @param model {@code Model} which the command should operate on.
+     * @return CommandResult with toAdd member
+     * @throws CommandException
+     */
     @Override
     public CommandResult execute(Model model) throws CommandException {
         requireNonNull(model);
@@ -59,10 +69,17 @@ public CommandResult execute(Model model) throws CommandException {
         return new CommandResult(String.format(MESSAGE_SUCCESS, toAdd));
     }
 
+    /**
+     * Overrides the equals method.
+     *
+     * @param other
+     * @return boolean
+     */
     @Override
     public boolean equals(Object other) {
         return other == this // short circuit if same object
                 || (other instanceof AddMemberCommand // instanceof handles nulls
                 && toAdd.equals(((AddMemberCommand) other).toAdd));
     }
+
 }
diff --git a/src/main/java/seedu/address/logic/commands/AddReservationCommand.java b/src/main/java/seedu/address/logic/commands/AddReservationCommand.java
index 27e4913753a..6597db45130 100644
--- a/src/main/java/seedu/address/logic/commands/AddReservationCommand.java
+++ b/src/main/java/seedu/address/logic/commands/AddReservationCommand.java
@@ -33,6 +33,9 @@
  */
 public class AddReservationCommand extends AddCommand {
 
+    /**
+     * Stands for the message add reservation command.
+     */
     public static final String MESSAGE_USAGE = COMMAND_WORD + ": Adds reservation to member "
             + "by member ID in the ezFoodie. "
             + "Parameters: "
@@ -46,13 +49,16 @@ public class AddReservationCommand extends AddCommand {
             + PREFIX_REMARK + " " + "2 people "
             + PREFIX_ID + " " + "10001";
 
+    /**
+     * Stands for message success for new reservation added.
+     */
     public static final String MESSAGE_SUCCESS = "New reservation added: %1$s";
 
     private final Reservation reservationToAdd;
     private final Id idToAdd;
 
     /**
-     * Creates an AddReservationCommand to add the specified {@code Member}
+     * Constructs an AddReservationCommand to add the specified {@code Member}.
      */
     public AddReservationCommand(Reservation reservation, Id id) {
         requireNonNull(id);
@@ -60,6 +66,13 @@ public AddReservationCommand(Reservation reservation, Id id) {
         idToAdd = id;
     }
 
+    /**
+     * Overrides and executes the model.
+     *
+     * @param model {@code Model} which the command should operate on.
+     * @return CommandResult with edited member
+     * @throws CommandException
+     */
     @Override
     public CommandResult execute(Model model) throws CommandException {
         requireNonNull(model);
@@ -77,7 +90,11 @@ public CommandResult execute(Model model) throws CommandException {
     }
 
     /**
-     * Creates and returns a {@code Member} with the details of {@code memberToEdit}
+     * Creates and returns a {@code Member} with the details of {@code memberToEdit}.
+     *
+     * @param memberToEdit
+     * @param reservation
+     * @return member with updated reservations
      */
     private static Member createUpdatedReservations(Member memberToEdit, Reservation reservation) {
         assert memberToEdit != null;
@@ -101,6 +118,12 @@ private static Member createUpdatedReservations(Member memberToEdit, Reservation
                 transactions, updatedReservations, tags);
     }
 
+    /**
+     * Overrides the equal method.
+     *
+     * @param other
+     * @return boolean
+     */
     @Override
     public boolean equals(Object other) {
         return other == this // short circuit if same object
diff --git a/src/main/java/seedu/address/logic/commands/AddTransactionCommand.java b/src/main/java/seedu/address/logic/commands/AddTransactionCommand.java
index 25606bb3a01..a2876d3c260 100644
--- a/src/main/java/seedu/address/logic/commands/AddTransactionCommand.java
+++ b/src/main/java/seedu/address/logic/commands/AddTransactionCommand.java
@@ -32,6 +32,9 @@
  */
 public class AddTransactionCommand extends AddCommand {
 
+    /**
+     * Stands for the message add transaction command.
+     */
     public static final String MESSAGE_USAGE = COMMAND_WORD + ": Adds a transaction to each member in the ezFoodie. "
             + "Parameters: "
             + PREFIX_TRANSACTION + " "
@@ -48,7 +51,7 @@ public class AddTransactionCommand extends AddCommand {
     private final Id idToAdd;
 
     /**
-     * Creates an AddTransactionCommand to add the specified {@code Member}
+     * Constructs an AddTransactionCommand to add the specified {@code Member}
      */
     public AddTransactionCommand(Transaction transaction, Id id) {
         requireAllNonNull(transaction, id);
@@ -56,6 +59,13 @@ public AddTransactionCommand(Transaction transaction, Id id) {
         idToAdd = id;
     }
 
+    /**
+     * Overrides and executes the model.
+     *
+     * @param model {@code Model} which the command should operate on.
+     * @return CommandResult with edited member
+     * @throws CommandException
+     */
     @Override
     public CommandResult execute(Model model) throws CommandException {
         requireNonNull(model);
@@ -71,8 +81,13 @@ public CommandResult execute(Model model) throws CommandException {
             throw new CommandException(Messages.MESSAGE_INVALID_MEMBER_DISPLAYED_ID);
         }
     }
+
     /**
-     * Creates and returns a {@code Member} with the details of {@code memberToEdit}
+     * Creates and returns a {@code Member} with the details of {@code memberToEdit}.
+     *
+     * @param memberToEdit
+     * @param transaction
+     * @return member with updated transactions and points
      */
     private static Member createUpdatedCreditAndPointsMember(Member memberToEdit, Transaction transaction) {
         assert memberToEdit != null;
@@ -97,6 +112,12 @@ private static Member createUpdatedCreditAndPointsMember(Member memberToEdit, Tr
                 updatePoint, updatedTransactions, reservations, updatedTags);
     }
 
+    /**
+     * Overrides the equal method.
+     *
+     * @param other
+     * @return boolean
+     */
     @Override
     public boolean equals(Object other) {
         return other == this // short circuit if same object
diff --git a/src/main/java/seedu/address/logic/commands/ClearCommand.java b/src/main/java/seedu/address/logic/commands/ClearCommand.java
index c75f9f90422..b9b77dbf8d4 100644
--- a/src/main/java/seedu/address/logic/commands/ClearCommand.java
+++ b/src/main/java/seedu/address/logic/commands/ClearCommand.java
@@ -10,10 +10,23 @@
  */
 public class ClearCommand extends Command {
 
+    /**
+     * Stands for Clean command word.
+     */
     public static final String COMMAND_WORD = "clear";
+
+    /**
+     * Stands for success message for clear command.
+     */
     public static final String MESSAGE_SUCCESS = "ezFoodie has been cleared!";
 
 
+    /**
+     * Overrides and Executes the model.
+     *
+     * @param model {@code Model} which the command should operate on
+     * @return CommandResult
+     */
     @Override
     public CommandResult execute(Model model) {
         requireNonNull(model);
diff --git a/src/main/java/seedu/address/logic/commands/CommandResult.java b/src/main/java/seedu/address/logic/commands/CommandResult.java
index 2f86be4e41f..73d36ab17ed 100644
--- a/src/main/java/seedu/address/logic/commands/CommandResult.java
+++ b/src/main/java/seedu/address/logic/commands/CommandResult.java
@@ -33,6 +33,12 @@ public class CommandResult {
 
     /**
      * Constructs a {@code CommandResult} with the specified fields.
+     *
+     * @param feedbackToUser
+     * @param showHelp
+     * @param exit
+     * @param showMemberView
+     * @param showSummary
      */
     public CommandResult(String feedbackToUser, boolean showHelp, boolean exit, boolean showMemberView,
                          boolean showSummary) {
@@ -46,17 +52,26 @@ public CommandResult(String feedbackToUser, boolean showHelp, boolean exit, bool
     /**
      * Constructs a {@code CommandResult} with the specified {@code feedbackToUser},
      * and other fields set to their default value.
+     *
+     * @param feedbackToUser
      */
     public CommandResult(String feedbackToUser) {
         this(feedbackToUser, false, false, false, false);
     }
 
+    /**
+     * Gets feedback to user
+     *
+     * @return string for feedback to user
+     */
     public String getFeedbackToUser() {
         return feedbackToUser;
     }
 
     /**
      * Determines whether the app should show help window.
+     *
+     * @return boolean
      */
     public boolean isShowHelp() {
         return showHelp;
@@ -64,6 +79,8 @@ public boolean isShowHelp() {
 
     /**
      * Determines whether the app should show member window.
+     *
+     * @return boolean
      */
     public boolean isShowMemberView() {
         return showMemberView;
@@ -71,6 +88,8 @@ public boolean isShowMemberView() {
 
     /**
      * Determines whether the app should show summary window.
+     *
+     * @return boolean
      */
     public boolean isShowSummary() {
         return showSummary;
@@ -78,11 +97,19 @@ public boolean isShowSummary() {
 
     /**
      * Determines whether the app should exit.
+     *
+     * @return boolean
      */
     public boolean isExit() {
         return exit;
     }
 
+    /**
+     * Overrides the equal method.
+     *
+     * @param other
+     * @return boolean
+     */
     @Override
     public boolean equals(Object other) {
         if (other == this) {
@@ -102,6 +129,11 @@ public boolean equals(Object other) {
                 && showSummary == otherCommandResult.showSummary;
     }
 
+    /**
+     * Overrides the hashCode method.
+     *
+     * @return int for hashed value
+     */
     @Override
     public int hashCode() {
         return Objects.hash(feedbackToUser, showHelp, showMemberView, exit, showSummary);
diff --git a/src/main/java/seedu/address/logic/commands/DeleteCommand.java b/src/main/java/seedu/address/logic/commands/DeleteCommand.java
index 8e719db5898..3f3364e11a1 100644
--- a/src/main/java/seedu/address/logic/commands/DeleteCommand.java
+++ b/src/main/java/seedu/address/logic/commands/DeleteCommand.java
@@ -11,12 +11,26 @@
  */
 public abstract class DeleteCommand extends Command {
 
+    /**
+     * Stands for delete command.
+     */
     public static final String COMMAND_WORD = "del";
+
+    /**
+     * Stands for the message of delete command from the ezFoodie.
+     */
     public static final String MESSAGE_USAGE = COMMAND_WORD + ": Deletes a member or a transaction from the ezFoodie.\n"
             + "With "
             + PREFIX_MEMBER + " (member details) or "
             + PREFIX_TRANSACTION + " (transaction details)";
 
+    /**
+     * Overrides and executes model.
+     *
+     * @param model {@code Model} which the command should operate on.
+     * @return CommandResult
+     * @throws CommandException
+     */
     @Override
     public abstract CommandResult execute(Model model) throws CommandException;
 
diff --git a/src/main/java/seedu/address/logic/commands/DeleteMemberCommand.java b/src/main/java/seedu/address/logic/commands/DeleteMemberCommand.java
index b4306c95d42..13762ffb86e 100644
--- a/src/main/java/seedu/address/logic/commands/DeleteMemberCommand.java
+++ b/src/main/java/seedu/address/logic/commands/DeleteMemberCommand.java
@@ -19,8 +19,14 @@
  */
 public class DeleteMemberCommand extends DeleteCommand {
 
+    /**
+     * Stands for delete command.
+     */
     public static final String COMMAND_WORD = "del";
 
+    /**
+     * Stands for the message of delete command related to a member from the ezFoodie.
+     */
     public static final String MESSAGE_USAGE = COMMAND_WORD
             + ": Deletes the member identified by the index number used in the displayed member list or member ID.\n"
             + "Parameters:\n"
@@ -31,13 +37,18 @@ public class DeleteMemberCommand extends DeleteCommand {
             + "Delete by index number: " + COMMAND_WORD + " " + PREFIX_MEMBER + " " + PREFIX_INDEX + " 1\n"
             + "Delete by member ID: " + COMMAND_WORD + " " + PREFIX_MEMBER + " " + PREFIX_ID + " 10001";
 
+    /**
+     * Stands for succeed message of delete member.
+     */
     public static final String MESSAGE_SUCCESS = "Deleted Member: %1$s";
 
     private final Index index;
     private final Id id;
 
     /**
-     * Creates an DeleteCommand to delete the specified {@code Member} by index number
+     * Creates an DeleteCommand to delete the specified {@code Member} by index number.
+     *
+     * @param index
      */
     public DeleteMemberCommand(Index index) {
         requireNonNull(index);
@@ -46,7 +57,9 @@ public DeleteMemberCommand(Index index) {
     }
 
     /**
-     * Creates an DeleteCommand to delete the specified {@code Member} by member ID
+     * Creates an DeleteCommand to delete the specified {@code Member} by member ID.
+     *
+     * @param id
      */
     public DeleteMemberCommand(Id id) {
         requireNonNull(id);
@@ -54,6 +67,13 @@ public DeleteMemberCommand(Id id) {
         index = null;
     }
 
+    /**
+     * Overrides and executes model.
+     *
+     * @param model {@code Model} which the command should operate on.
+     * @return CommandResult
+     * @throws CommandException
+     */
     @Override
     public CommandResult execute(Model model) throws CommandException {
         requireNonNull(model);
@@ -80,6 +100,12 @@ public CommandResult execute(Model model) throws CommandException {
 
     }
 
+    /**
+     * Overrides equals method.
+     *
+     * @param other
+     * @return
+     */
     @Override
     public boolean equals(Object other) {
         return other == this // short circuit if same object
diff --git a/src/main/java/seedu/address/logic/commands/DeleteReservationCommand.java b/src/main/java/seedu/address/logic/commands/DeleteReservationCommand.java
index afe1b96d06d..b9e20721fde 100644
--- a/src/main/java/seedu/address/logic/commands/DeleteReservationCommand.java
+++ b/src/main/java/seedu/address/logic/commands/DeleteReservationCommand.java
@@ -31,8 +31,14 @@
  */
 public class DeleteReservationCommand extends DeleteCommand {
 
+    /**
+     * Stands for delete command.
+     */
     public static final String COMMAND_WORD = "del";
 
+    /**
+     * Stands for the message of delete command related to reservations.
+     */
     public static final String MESSAGE_USAGE = COMMAND_WORD
             + ": Deletes the reservation identified by the member ID and reservation ID.\n"
             + "Parameters:\n"
@@ -42,13 +48,19 @@ public class DeleteReservationCommand extends DeleteCommand {
             + "Delete by member ID and reservation ID: "
             + COMMAND_WORD + " " + PREFIX_RESERVATION + " " + PREFIX_ID + " 10001100001";
 
+    /**
+     * Stands for succeed message of delete reservation.
+     */
     public static final String MESSAGE_SUCCESS = "Deleted reservation: %1$s";
 
     private final seedu.address.model.member.Id memberId;
     private final Id reservationId;
 
     /**
-     * Creates an DeleteCommand to delete the specified {@code Member} by member ID and transaction ID
+     * Constructs DeleteReservationCommand to delete the specified {@code Member} by member ID and transaction ID.
+     *
+     * @param memberId
+     * @param reservationId
      */
     public DeleteReservationCommand(seedu.address.model.member.Id memberId, Id reservationId) {
         requireAllNonNull(memberId, reservationId);
@@ -57,7 +69,11 @@ public DeleteReservationCommand(seedu.address.model.member.Id memberId, Id reser
     }
 
     /**
-     * Creates and returns a {@code Member} with the details of {@code memberToEdit}
+     * Creates and returns a {@code Member} with the details of {@code memberToEdit}.
+     *
+     * @param memberToEdit
+     * @param reservation
+     * @return Member with updated reservation
      */
     private static Member createUpdatedReservation(Member memberToEdit, Reservation reservation) {
         assert memberToEdit != null;
@@ -81,6 +97,13 @@ private static Member createUpdatedReservation(Member memberToEdit, Reservation
                 transactions, reservations, updatedTags);
     }
 
+    /**
+     * Overrides and executes the model.
+     *
+     * @param model {@code Model} which the command should operate on.
+     * @return CommandResult
+     * @throws CommandException
+     */
     @Override
     public CommandResult execute(Model model) throws CommandException {
         requireNonNull(model);
@@ -103,6 +126,12 @@ public CommandResult execute(Model model) throws CommandException {
         }
     }
 
+    /**
+     * Overrides the equals method.
+     *
+     * @param other
+     * @return boolean
+     */
     @Override
     public boolean equals(Object other) {
         return other == this // short circuit if same object
diff --git a/src/main/java/seedu/address/logic/commands/DeleteTransactionCommand.java b/src/main/java/seedu/address/logic/commands/DeleteTransactionCommand.java
index 6f35d541b98..29a54cec980 100644
--- a/src/main/java/seedu/address/logic/commands/DeleteTransactionCommand.java
+++ b/src/main/java/seedu/address/logic/commands/DeleteTransactionCommand.java
@@ -31,8 +31,14 @@
  */
 public class DeleteTransactionCommand extends DeleteCommand {
 
+    /**
+     * Stands for delete command.
+     */
     public static final String COMMAND_WORD = "del";
 
+    /**
+     * Stands for the message of delete command related to transaction.
+     */
     public static final String MESSAGE_USAGE = COMMAND_WORD
             + ": Deletes the transaction identified by the member ID and transaction ID.\n"
             + "Parameters:\n"
@@ -42,13 +48,19 @@ public class DeleteTransactionCommand extends DeleteCommand {
             + "Delete by member ID and transaction ID: "
             + COMMAND_WORD + " " + PREFIX_TRANSACTION + " " + PREFIX_ID + " 10001100001";
 
+    /**
+     * Stands for succeed message of delete transaction.
+     */
     public static final String MESSAGE_SUCCESS = "Deleted Transaction: %1$s";
 
     private final seedu.address.model.member.Id memberId;
     private final seedu.address.model.transaction.Id transactionId;
 
     /**
-     * Creates an DeleteCommand to delete the specified {@code Member} by member ID and transaction ID
+     * Constructs an DeleteCommand to delete the specified {@code Member} by member ID and transaction ID.
+     *
+     * @param memberId
+     * @param transactionId
      */
     public DeleteTransactionCommand(
             seedu.address.model.member.Id memberId, seedu.address.model.transaction.Id transactionId) {
@@ -58,7 +70,11 @@ public DeleteTransactionCommand(
     }
 
     /**
-     * Creates and returns a {@code Member} with the details of {@code memberToEdit}
+     * Creates and returns a {@code Member} with the details of {@code memberToEdit}.
+     *
+     * @param memberToEdit
+     * @param transaction
+     * @return Member with added transactions and updated credits
      */
     private static Member createUpdatedCredits(Member memberToEdit, Transaction transaction) {
         assert memberToEdit != null;
@@ -85,6 +101,13 @@ private static Member createUpdatedCredits(Member memberToEdit, Transaction tran
                 updatePoint, updatedTransactions, reservations, updatedTags);
     }
 
+    /**
+     * Overrides and executes the model.
+     *
+     * @param model {@code Model} which the command should operate on.
+     * @return CommandResult
+     * @throws CommandException
+     */
     @Override
     public CommandResult execute(Model model) throws CommandException {
         requireNonNull(model);
@@ -107,6 +130,12 @@ public CommandResult execute(Model model) throws CommandException {
         }
     }
 
+    /**
+     * Overrides the equals method
+     *
+     * @param other
+     * @return boolean
+     */
     @Override
     public boolean equals(Object other) {
         return other == this // short circuit if same object
diff --git a/src/main/java/seedu/address/logic/commands/EditCommand.java b/src/main/java/seedu/address/logic/commands/EditCommand.java
index 7ee0785f99c..4cf5e982de5 100644
--- a/src/main/java/seedu/address/logic/commands/EditCommand.java
+++ b/src/main/java/seedu/address/logic/commands/EditCommand.java
@@ -11,12 +11,26 @@
  */
 public abstract class EditCommand extends Command {
 
+    /**
+     * Stands for edit command.
+     */
     public static final String COMMAND_WORD = "edit";
+
+    /**
+     * Stands for the message of edit command.
+     */
     public static final String MESSAGE_USAGE = COMMAND_WORD + ": Edits a member or a transaction in the ezFoodie.\n"
             + "With "
             + PREFIX_MEMBER + " (member details) or "
             + PREFIX_TRANSACTION + " (transaction details)";
 
+    /**
+     * Overrides the executes command.
+     *
+     * @param model {@code Model} which the command should operate on.
+     * @return
+     * @throws CommandException
+     */
     @Override
     public abstract CommandResult execute(Model model) throws CommandException;
 
diff --git a/src/main/java/seedu/address/logic/commands/EditMemberCommand.java b/src/main/java/seedu/address/logic/commands/EditMemberCommand.java
index fc9b72503c8..c3e21ded799 100644
--- a/src/main/java/seedu/address/logic/commands/EditMemberCommand.java
+++ b/src/main/java/seedu/address/logic/commands/EditMemberCommand.java
@@ -40,8 +40,14 @@
  */
 public class EditMemberCommand extends EditCommand {
 
+    /**
+     * Stands for edit command.
+     */
     public static final String COMMAND_WORD = "edit";
 
+    /**
+     * Stands for the message of edit command.
+     */
     public static final String MESSAGE_USAGE = COMMAND_WORD + ": Edits the details of the member identified "
             + "by the index number used in the displayed member list or the member ID. "
             + "Existing values will be overwritten by the input values.\n"
@@ -67,8 +73,19 @@ public class EditMemberCommand extends EditCommand {
             + PREFIX_PHONE + " 91234567 "
             + PREFIX_EMAIL + " johndoe@example.com";
 
+    /**
+     * Stands for succeed message of edit member.
+     */
     public static final String MESSAGE_SUCCESS = "Edited Member: %1$s";
+
+    /**
+     * Stands for message of not edited which need fields provided.
+     */
     public static final String MESSAGE_NOT_EDITED = "At least one field to edit must be provided.";
+
+    /**
+     * Stands for message of duplicate message.
+     */
     public static final String MESSAGE_DUPLICATE_MEMBER = "This member already exists in the ezFoodie.";
 
     private final Index index;
@@ -76,6 +93,8 @@ public class EditMemberCommand extends EditCommand {
     private final EditMemberDescriptor editMemberDescriptor;
 
     /**
+     * Constructs EditMemberCommand to edit member by index.
+     *
      * @param index of the member in the updated member list to edit
      * @param editMemberDescriptor details to edit the member with
      */
@@ -89,6 +108,8 @@ public EditMemberCommand(Index index, EditMemberDescriptor editMemberDescriptor)
     }
 
     /**
+     * Constructs EditMemberCommand to edit member by member id.
+     *
      * @param id of the member in the updated member list to edit
      * @param editMemberDescriptor details to edit the member with
      */
@@ -101,6 +122,13 @@ public EditMemberCommand(Id id, EditMemberDescriptor editMemberDescriptor) {
         this.editMemberDescriptor = new EditMemberDescriptor(editMemberDescriptor);
     }
 
+    /**
+     * Overrides and executes model.
+     *
+     * @param model {@code Model} which the command should operate on.
+     * @return CommandResult
+     * @throws CommandException
+     */
     @Override
     public CommandResult execute(Model model) throws CommandException {
         requireNonNull(model);
@@ -134,6 +162,10 @@ public CommandResult execute(Model model) throws CommandException {
     /**
      * Creates and returns a {@code Member} with the details of {@code memberToEdit}
      * edited with {@code editMemberDescriptor}.
+     *
+     * @param memberToEdit
+     * @param editMemberDescriptor
+     * @return Member with edited member
      */
     private static Member createEditedMember(Member memberToEdit, EditMemberDescriptor editMemberDescriptor) {
         assert memberToEdit != null;
@@ -154,6 +186,12 @@ private static Member createEditedMember(Member memberToEdit, EditMemberDescript
                 transactions, reservations, updatedTags);
     }
 
+    /**
+     * Overrides the equals method.
+     *
+     * @param other
+     * @return boolean
+     */
     @Override
     public boolean equals(Object other) {
         return other == this // short circuit if same object
@@ -195,34 +233,74 @@ public boolean isAnyFieldEdited() {
             return CollectionUtil.isAnyNonNull(name, phone, email, address, tags);
         }
 
+        /**
+         * Sets name.
+         *
+         * @param name
+         */
         public void setName(Name name) {
             this.name = name;
         }
 
+        /**
+         * Gets name.
+         *
+         * @return Optional<Name>
+         */
         public Optional<Name> getName() {
             return Optional.ofNullable(name);
         }
 
+        /**
+         * Sets phone.
+         *
+         * @param phone
+         */
         public void setPhone(Phone phone) {
             this.phone = phone;
         }
 
+        /**
+         * Gets phone.
+         *
+         * @return Optional<Phone>
+         */
         public Optional<Phone> getPhone() {
             return Optional.ofNullable(phone);
         }
 
+        /**
+         * Sets email.
+         *
+         * @param email
+         */
         public void setEmail(Email email) {
             this.email = email;
         }
 
+        /**
+         * Gets email.
+         *
+         * @return Optional<Email>
+         */
         public Optional<Email> getEmail() {
             return Optional.ofNullable(email);
         }
 
+        /**
+         * Sets address.
+         *
+         * @param address
+         */
         public void setAddress(Address address) {
             this.address = address;
         }
 
+        /**
+         * Gets address.
+         *
+         * @return Optional<Address>
+         */
         public Optional<Address> getAddress() {
             return Optional.ofNullable(address);
         }
@@ -230,6 +308,8 @@ public Optional<Address> getAddress() {
         /**
          * Sets {@code tags} to this object's {@code tags}.
          * A defensive copy of {@code tags} is used internally.
+         *
+         * @param tags
          */
         public void setTags(Set<Tag> tags) {
             this.tags = (tags != null) ? new HashSet<>(tags) : null;
@@ -244,6 +324,12 @@ public Optional<Set<Tag>> getTags() {
             return (tags != null) ? Optional.of(Collections.unmodifiableSet(tags)) : Optional.empty();
         }
 
+        /**
+         * Overrides the equal method.
+         *
+         * @param other
+         * @return boolean
+         */
         @Override
         public boolean equals(Object other) {
             // short circuit if same object
diff --git a/src/main/java/seedu/address/logic/commands/EditReservationCommand.java b/src/main/java/seedu/address/logic/commands/EditReservationCommand.java
index d7529433ffe..542eafa2209 100644
--- a/src/main/java/seedu/address/logic/commands/EditReservationCommand.java
+++ b/src/main/java/seedu/address/logic/commands/EditReservationCommand.java
@@ -36,8 +36,14 @@
  */
 public class EditReservationCommand extends EditCommand {
 
+    /**
+     * Stands for edit command.
+     */
     public static final String COMMAND_WORD = "edit";
 
+    /**
+     * Stands for the message of edit reservation command.
+     */
     public static final String MESSAGE_USAGE = COMMAND_WORD + ": Edits the details of the reservation identified "
             + "by the member ID and reservation ID. "
             + "Existing values will be overwritten by the input values.\n"
@@ -52,14 +58,22 @@ public class EditReservationCommand extends EditCommand {
             + PREFIX_DATE_TIME + " 2021-12-01 13:00"
             + PREFIX_REMARK + " 3 people";
 
+    /**
+     * Stands for succeed message of edit member
+     */
     public static final String MESSAGE_SUCCESS = "Edited Member: %1$s";
-    public static final String MESSAGE_NOT_EDITED = "At least one field to edit must be provided.";
 
+    /**
+     * Stands for message of not edited which need fields provided.
+     */
+    public static final String MESSAGE_NOT_EDITED = "At least one field to edit must be provided.";
     private final seedu.address.model.member.Id memberId;
     private final seedu.address.model.reservation.Id reservationId;
     private final EditReservationDescriptor editReservationDescriptor;
 
     /**
+     * Constructs the EditReservationCommand
+     *
      * @param memberId of the member in the updated member list to edit
      * @param reservationId of the reservation in the reservation list to edit
      * @param editReservationDescriptor details to edit the reservation with
@@ -76,6 +90,11 @@ public EditReservationCommand(
 
     /**
      * Creates and returns a {@code Member} with the details of {@code memberToEdit}
+     *
+     * @param memberToEdit
+     * @param reservationToEdit
+     * @param editReservationDescriptor
+     * @return member with updated credits
      */
     private static Member createUpdatedCredits(
             Member memberToEdit, Reservation reservationToEdit, EditReservationDescriptor editReservationDescriptor) {
@@ -107,6 +126,13 @@ private static Member createUpdatedCredits(
                 transactions, updatedReservations, updatedTags);
     }
 
+    /**
+     * Overrides and executes the model.
+     *
+     * @param model {@code Model} which the command should operate on.
+     * @return CommandResult
+     * @throws CommandException
+     */
     @Override
     public CommandResult execute(Model model) throws CommandException {
         requireNonNull(model);
@@ -129,6 +155,12 @@ public CommandResult execute(Model model) throws CommandException {
         }
     }
 
+    /**
+     * Overrides the equal method.
+     *
+     * @param other
+     * @return boolean
+     */
     @Override
     public boolean equals(Object other) {
         return other == this // short circuit if same object
@@ -147,6 +179,9 @@ public static class EditReservationDescriptor {
         private DateTime dateTime;
         private Remark remark;
 
+        /**
+         * Constructs the EditReservationDescriptor without input
+         */
         public EditReservationDescriptor() {}
 
         /**
@@ -160,27 +195,55 @@ public EditReservationDescriptor(EditReservationDescriptor toCopy) {
 
         /**
          * Returns true if at least one field is edited.
+         *
+         * @return boolean
          */
         public boolean isAnyFieldEdited() {
             return CollectionUtil.isAnyNonNull(dateTime, remark);
         }
 
+        /**
+         * Sets DateTime.
+         *
+         * @param dateTime
+         */
         public void setDateTime(DateTime dateTime) {
             this.dateTime = dateTime;
         }
 
+        /**
+         * Gets dateTime.
+         *
+         * @return dateTime
+         */
         public Optional<DateTime> getDateTime() {
             return Optional.ofNullable(dateTime);
         }
 
+        /**
+         * Sets remark.
+         *
+         * @param remark
+         */
         public void setRemark(Remark remark) {
             this.remark = remark;
         }
 
+        /**
+         * Gets remark.
+         *
+         * @return Optional<Remark>
+         */
         public Optional<Remark> getRemark() {
             return Optional.ofNullable(remark);
         }
 
+        /**
+         * Override the equal method.
+         *
+         * @param other
+         * @return boolean
+         */
         @Override
         public boolean equals(Object other) {
             // short circuit if same object
diff --git a/src/main/java/seedu/address/logic/commands/EditTransactionCommand.java b/src/main/java/seedu/address/logic/commands/EditTransactionCommand.java
index b13457c67d8..12a9d687d48 100644
--- a/src/main/java/seedu/address/logic/commands/EditTransactionCommand.java
+++ b/src/main/java/seedu/address/logic/commands/EditTransactionCommand.java
@@ -34,8 +34,14 @@
  */
 public class EditTransactionCommand extends EditCommand {
 
+    /**
+     * Stands for edit command.
+     */
     public static final String COMMAND_WORD = "edit";
 
+    /**
+     * Stands for the message of edit command for edit transaction.
+     */
     public static final String MESSAGE_USAGE = COMMAND_WORD + ": Edits the details of the transaction identified "
             + "by the member ID and transaction ID. "
             + "Existing values will be overwritten by the input values.\n"
@@ -48,7 +54,14 @@ public class EditTransactionCommand extends EditCommand {
             + COMMAND_WORD + " " + PREFIX_TRANSACTION + " " + PREFIX_ID + " 10001100001 "
             + PREFIX_BILLING + " 123.45";
 
+    /**
+     * Stands for succeed message of edit member.
+     */
     public static final String MESSAGE_SUCCESS = "Edited Member: %1$s";
+
+    /**
+     * Stands for message of not edited which need fields provided.
+     */
     public static final String MESSAGE_NOT_EDITED = "At least one field to edit must be provided.";
 
     private final seedu.address.model.member.Id memberId;
@@ -56,6 +69,8 @@ public class EditTransactionCommand extends EditCommand {
     private final EditTransactionDescriptor editTransactionDescriptor;
 
     /**
+     * Constructs EditTransactionCommand.
+     *
      * @param memberId of the member in the updated member list to edit
      * @param transactionId of the transaction in the transaction list to edit
      * @param editTransactionDescriptor details to edit the transaction with
@@ -71,7 +86,12 @@ public EditTransactionCommand(
     }
 
     /**
-     * Creates and returns a {@code Member} with the details of {@code memberToEdit}
+     * Creates and returns a {@code Member} with the details of {@code memberToEdit}.
+     *
+     * @param memberToEdit
+     * @param transactionToEdit
+     * @param editTransactionDescriptor
+     * @return member with updated credits
      */
     private static Member createUpdatedCredits(
             Member memberToEdit, Transaction transactionToEdit, EditTransactionDescriptor editTransactionDescriptor) {
@@ -109,6 +129,13 @@ private static Member createUpdatedCredits(
                 updatePoint, updatedTransactions, reservations, updatedTags);
     }
 
+    /**
+     * Overrides and executes model
+     *
+     * @param model {@code Model} which the command should operate on.
+     * @return CommandResult
+     * @throws CommandException
+     */
     @Override
     public CommandResult execute(Model model) throws CommandException {
         requireNonNull(model);
@@ -131,6 +158,12 @@ public CommandResult execute(Model model) throws CommandException {
         }
     }
 
+    /**
+     * Overrides the equals method.
+     *
+     * @param other
+     * @return boolean
+     */
     @Override
     public boolean equals(Object other) {
         return other == this // short circuit if same object
@@ -167,22 +200,48 @@ public boolean isAnyFieldEdited() {
             return CollectionUtil.isAnyNonNull(timestamp, billing);
         }
 
+        /**
+         * Sets time stamp.
+         *
+         * @param timestamp
+         */
         public void setTimestamp(Timestamp timestamp) {
             this.timestamp = timestamp;
         }
 
+        /**
+         * Gets time stamp
+         *
+         * @return Optional<Timestamp>
+         */
         public Optional<Timestamp> getTimestamp() {
             return Optional.ofNullable(timestamp);
         }
 
+        /**
+         * Sets Billing
+         *
+         * @param billing
+         */
         public void setBilling(Billing billing) {
             this.billing = billing;
         }
 
+        /**
+         * Gets billing
+         *
+         * @return Optional<Billing>
+         */
         public Optional<Billing> getBilling() {
             return Optional.ofNullable(billing);
         }
 
+        /**
+         * Overrides the equals method.
+         *
+         * @param other
+         * @return boolean
+         */
         @Override
         public boolean equals(Object other) {
             // short circuit if same object
diff --git a/src/main/java/seedu/address/logic/commands/ExitCommand.java b/src/main/java/seedu/address/logic/commands/ExitCommand.java
index c46ca05a216..4f8c7653f14 100644
--- a/src/main/java/seedu/address/logic/commands/ExitCommand.java
+++ b/src/main/java/seedu/address/logic/commands/ExitCommand.java
@@ -7,10 +7,22 @@
  */
 public class ExitCommand extends Command {
 
+    /**
+     * Stands for exit command.
+     */
     public static final String COMMAND_WORD = "exit";
 
+    /**
+     * Stands for the message of exit success command.
+     */
     public static final String MESSAGE_EXIT_ACKNOWLEDGEMENT = "Exiting ezFoodie as requested ...";
 
+    /**
+     * Overrides and executes the model
+     *
+     * @param model {@code Model} which the command should operate on.
+     * @return CommandResult
+     */
     @Override
     public CommandResult execute(Model model) {
         return new CommandResult(MESSAGE_EXIT_ACKNOWLEDGEMENT, false, true, false, false);
diff --git a/src/main/java/seedu/address/logic/commands/FindCommand.java b/src/main/java/seedu/address/logic/commands/FindCommand.java
index 9854e87cbed..bc9bab515d8 100644
--- a/src/main/java/seedu/address/logic/commands/FindCommand.java
+++ b/src/main/java/seedu/address/logic/commands/FindCommand.java
@@ -25,8 +25,14 @@
  */
 public class FindCommand extends Command {
 
+    /**
+     * Stands for find command.
+     */
     public static final String COMMAND_WORD = "find";
 
+    /**
+     * Stands for the message of find command.
+     */
     public static final String MESSAGE_USAGE = COMMAND_WORD
             + ": Finds all members whose ids, names, phones or emails contain any of "
             + "the specified keywords (case-insensitive) or within a specific of registration dates "
@@ -47,26 +53,57 @@ public class FindCommand extends Command {
 
     private final Predicate<Member> predicate;
 
+    /**
+     * Constructs FindCommand through Id.
+     *
+     * @param predicate
+     */
     public FindCommand(IdContainsKeywordsPredicate predicate) {
         this.predicate = predicate;
     }
 
+    /**
+     * Constructs FindCommand through Name.
+     *
+     * @param predicate
+     */
     public FindCommand(NameContainsKeywordsPredicate predicate) {
         this.predicate = predicate;
     }
 
+    /**
+     * Constructs FindCommand through Phone.
+     *
+     * @param predicate
+     */
     public FindCommand(PhoneContainsKeywordsPredicate predicate) {
         this.predicate = predicate;
     }
 
+    /**
+     * Constructs FindCommand through Email.
+     *
+     * @param predicate
+     */
     public FindCommand(EmailContainsKeywordsPredicate predicate) {
         this.predicate = predicate;
     }
 
+    /**
+     * Constructs FindCommand through RegistrationDate.
+     *
+     * @param predicate
+     */
     public FindCommand(RegistrationDateContainsKeywordsPredicate predicate) {
         this.predicate = predicate;
     }
 
+    /**
+     * Overrides and executes model.
+     *
+     * @param model {@code Model} which the command should operate on.
+     * @return CommandResult
+     */
     @Override
     public CommandResult execute(Model model) {
         requireNonNull(model);
@@ -75,6 +112,12 @@ public CommandResult execute(Model model) {
                 String.format(Messages.MESSAGE_MEMBERS_LISTED_OVERVIEW, model.getUpdatedMemberList().size()));
     }
 
+    /**
+     * Overrides the equals method.
+     *
+     * @param other
+     * @return boolean
+     */
     @Override
     public boolean equals(Object other) {
         return other == this // short circuit if same object
diff --git a/src/main/java/seedu/address/logic/commands/HelpCommand.java b/src/main/java/seedu/address/logic/commands/HelpCommand.java
index 492a3633fbd..b6b0d261df9 100644
--- a/src/main/java/seedu/address/logic/commands/HelpCommand.java
+++ b/src/main/java/seedu/address/logic/commands/HelpCommand.java
@@ -7,13 +7,28 @@
  */
 public class HelpCommand extends Command {
 
+    /**
+     * Stands for help command.
+     */
     public static final String COMMAND_WORD = "help";
 
+    /**
+     * Stands for the message of help command.
+     */
     public static final String MESSAGE_USAGE = COMMAND_WORD + ": Shows program usage instructions.\n"
             + "Example: " + COMMAND_WORD;
 
+    /**
+     * Stands for the message of help command and show help window.
+     */
     public static final String SHOWING_HELP_MESSAGE = "Opened help window.";
 
+    /**
+     * Overrides and executes the model.
+     *
+     * @param model {@code Model} which the command should operate on.
+     * @return CommandResult
+     */
     @Override
     public CommandResult execute(Model model) {
         return new CommandResult(SHOWING_HELP_MESSAGE, true, false, false, false);
diff --git a/src/main/java/seedu/address/logic/commands/ListCommand.java b/src/main/java/seedu/address/logic/commands/ListCommand.java
index 3a1911d4800..7f9ddb640ec 100644
--- a/src/main/java/seedu/address/logic/commands/ListCommand.java
+++ b/src/main/java/seedu/address/logic/commands/ListCommand.java
@@ -11,16 +11,30 @@
  */
 public class ListCommand extends Command {
 
+    /**
+     * Stands for list command.
+     */
     public static final String COMMAND_WORD = "list";
 
+    /**
+     * Stands for the message of list command.
+     */
     public static final String MESSAGE_USAGE = COMMAND_WORD
             + ": Lists out all members.\n"
             + "Parameters: " + PREFIX_MEMBER + "\n"
             + "Example: " + COMMAND_WORD + " " + PREFIX_MEMBER;
 
+    /**
+     * Stands for the message success listed
+     */
     public static final String MESSAGE_SUCCESS = "Listed all members";
 
-
+    /**
+     * Overrides and Executes the model.
+     *
+     * @param model {@code Model} which the command should operate on.
+     * @return CommandResult
+     */
     @Override
     public CommandResult execute(Model model) {
         requireNonNull(model);
@@ -28,6 +42,12 @@ public CommandResult execute(Model model) {
         return new CommandResult(MESSAGE_SUCCESS);
     }
 
+    /**
+     * Overrides the equals method.
+     *
+     * @param other
+     * @return boolean
+     */
     @Override
     public boolean equals(Object other) {
         return other instanceof ListCommand;
diff --git a/src/main/java/seedu/address/logic/commands/LoginCommand.java b/src/main/java/seedu/address/logic/commands/LoginCommand.java
index 41f621ba0ef..6199a7faef2 100644
--- a/src/main/java/seedu/address/logic/commands/LoginCommand.java
+++ b/src/main/java/seedu/address/logic/commands/LoginCommand.java
@@ -9,24 +9,52 @@
  */
 public class LoginCommand extends Command {
 
+    /**
+     * Stands for login command.
+     */
     public static final String COMMAND_WORD = "login";
 
+    /**
+     * Stands for the message of login command.
+     */
     public static final String MESSAGE_USAGE = COMMAND_WORD
         + ": Logs in as a manager by password.\n"
         + "Parameters: PASSWORD (case-sensitive and must be not empty, default by "
         + Password.DEFAULT_PLAINTEXT_PASSWORD + ")\n"
         + "Example: " + COMMAND_WORD + " " + Password.DEFAULT_PLAINTEXT_PASSWORD;
 
+    /**
+     * Stands for the message of login successfully.
+     */
     public static final String MESSAGE_SUCCESS = "Logged in successfully!";
+
+    /**
+     * Stands for the message of login failed.
+     */
     public static final String MESSAGE_FAILURE = "Failed to login!";
+
+    /**
+     * Stands for the message of login status.
+     */
     public static final String MESSAGE_ALREADY_IN_STATUS = "You are already in MANAGER login status!";
 
     private final Password password;
 
+    /**
+     * Constructs LoginCommand
+     *
+     * @param password
+     */
     public LoginCommand(Password password) {
         this.password = password;
     }
 
+    /**
+     * Overrides and executes the model
+     *
+     * @param model {@code Model} which the command should operate on.
+     * @return CommandResult
+     */
     @Override
     public CommandResult execute(Model model) {
         if (LoginStatus.getLoginStatus() == LoginStatus.MANAGER) {
diff --git a/src/main/java/seedu/address/logic/commands/LogoutCommand.java b/src/main/java/seedu/address/logic/commands/LogoutCommand.java
index 52a464c08fd..21e5e465e5a 100644
--- a/src/main/java/seedu/address/logic/commands/LogoutCommand.java
+++ b/src/main/java/seedu/address/logic/commands/LogoutCommand.java
@@ -11,10 +11,27 @@
  */
 public class LogoutCommand extends Command {
 
+    /**
+     * Stands for logout command.
+     */
     public static final String COMMAND_WORD = "logout";
+
+    /**
+     * Stands for the message of logout successfully.
+     */
     public static final String MESSAGE_SUCCESS = "Logged out successfully!";
+
+    /**
+     * Stands for the message of logout status.
+     */
     public static final String MESSAGE_ALREADY_IN_STATUS = "You are already in STAFF login status!";
 
+    /**
+     * Overrides and executes the model.
+     *
+     * @param model {@code Model} which the command should operate on.
+     * @return CommandResult
+     */
     @Override
     public CommandResult execute(Model model) {
         requireNonNull(model);
diff --git a/src/main/java/seedu/address/logic/commands/RedeemCommand.java b/src/main/java/seedu/address/logic/commands/RedeemCommand.java
index a5f4d077905..ffa6c945629 100644
--- a/src/main/java/seedu/address/logic/commands/RedeemCommand.java
+++ b/src/main/java/seedu/address/logic/commands/RedeemCommand.java
@@ -28,10 +28,19 @@
 import seedu.address.model.tag.Tag;
 import seedu.address.model.transaction.Transaction;
 
+/**
+ * Redeems point from an existing member in the ezFoodie.
+ */
 public class RedeemCommand extends Command {
 
+    /**
+     * Stands for redeem command.
+     */
     public static final String COMMAND_WORD = "redeem";
 
+    /**
+     * Stands for the message of redeem command.
+     */
     public static final String MESSAGE_USAGE = COMMAND_WORD + ": Redeems points from member id in the ezFoodie. "
             + "Parameters: "
             + PREFIX_REDEEM + " [points]"
@@ -46,8 +55,19 @@ public class RedeemCommand extends Command {
             + PREFIX_REDEEM + " 100 "
             + PREFIX_INDEX + " 1\n";
 
+    /**
+     * Stands for message for redeem points successfully.
+     */
     public static final String MESSAGE_SUCCESS_REDEMPTION = "Redemption is done";
+
+    /**
+     * Stands for message for duplicate member.
+     */
     public static final String MESSAGE_DUPLICATE_MEMBER = "This member already exists in the ezFoodie.";
+
+    /**
+     * Stands for message when redemption point exceed.
+     */
     public static final String MESSAGE_INVALID_POINTS_LESS_THAN_ZERO = "Redeemed point has already exceeded\n"
             + "Points can't redeemed less than 0\n"
             + "Please try again";
@@ -57,7 +77,10 @@ public class RedeemCommand extends Command {
     private final Index indexToRedeem;
 
     /**
-     * Creates an redeemPointsCommand to add the specified {@code Member}
+     * Constructs an RedeemCommand to add the specified {@code Member} by id.
+     *
+     * @param pointsToRedeemList
+     * @param id
      */
     public RedeemCommand(List<Point> pointsToRedeemList, Id id) {
         requireAllNonNull(pointsToRedeemList, id);
@@ -67,7 +90,10 @@ public RedeemCommand(List<Point> pointsToRedeemList, Id id) {
     }
 
     /**
-     * Creates an redeemPointsCommand to add the specified {@code Member}
+     * Constructs an RedeemCommand to add the specified {@code Member} by index.
+     *
+     * @param pointsToRedeemList
+     * @param index
      */
     public RedeemCommand(List<Point> pointsToRedeemList, Index index) {
         requireAllNonNull(pointsToRedeemList, index);
@@ -76,6 +102,13 @@ public RedeemCommand(List<Point> pointsToRedeemList, Index index) {
         this.idToRedeem = null;
     }
 
+    /**
+     * Overrides and executes the model.
+     *
+     * @param model {@code Model} which the command should operate on.
+     * @return CommandResult
+     * @throws CommandException
+     */
     @Override
     public CommandResult execute(Model model) throws CommandException {
         requireNonNull(model);
@@ -109,6 +142,11 @@ public CommandResult execute(Model model) throws CommandException {
     /**
      * Creates and returns a {@code Member} with the details of {@code memberToEdit}
      * edited with {@code editMemberDescriptor}.
+     *
+     * @param memberToRedeemPoints
+     * @param toRedeemPointsList
+     * @return Member with redeemed Points
+     * @throws CommandException
      */
     private static Member createToRedeemPointsMember(Member memberToRedeemPoints, List<Point> toRedeemPointsList)
             throws CommandException {
diff --git a/src/main/java/seedu/address/logic/commands/SortCommand.java b/src/main/java/seedu/address/logic/commands/SortCommand.java
index 2fd4ae6b133..d917e713bf4 100644
--- a/src/main/java/seedu/address/logic/commands/SortCommand.java
+++ b/src/main/java/seedu/address/logic/commands/SortCommand.java
@@ -15,8 +15,14 @@
  */
 public class SortCommand extends Command {
 
+    /**
+     * Stands for sort command.
+     */
     public static final String COMMAND_WORD = "sort";
 
+    /**
+     * Stands for the message of Sort command.
+     */
     public static final String MESSAGE_USAGE = COMMAND_WORD
             + ": Sorts all members by credit in ascending or descending "
             + "and displays them as a list with index numbers.\n"
@@ -29,15 +35,33 @@ public class SortCommand extends Command {
             + "Sort credit in descending: "
             + COMMAND_WORD + " " + PREFIX_MEMBER + " " + PREFIX_CREDIT + " " + PREFIX_DESC;
 
+    /**
+     * Stands for the message of sorted in ascending.
+     */
     public static final String MESSAGE_SORT_ASC = "Members sorted by credit in ascending!";
+
+    /**
+     * Stands for the message of sorted in descending.
+     */
     public static final String MESSAGE_SORT_DESC = "Members sorted by credit in descending!";
 
     private final CreditSortComparator comparator;
 
+    /**
+     * Constructs SortCommand。
+     *
+     * @param comparator
+     */
     public SortCommand(CreditSortComparator comparator) {
         this.comparator = comparator;
     }
 
+    /**
+     * Overrides and executes the model.
+     *
+     * @param model {@code Model} which the command should operate on.
+     * @return CommandResult
+     */
     @Override
     public CommandResult execute(Model model) {
         requireNonNull(model);
@@ -49,6 +73,12 @@ public CommandResult execute(Model model) {
         }
     }
 
+    /**
+     * Overrides the equals method.
+     *
+     * @param other
+     * @return
+     */
     @Override
     public boolean equals(Object other) {
         return other == this // short circuit if same object
diff --git a/src/main/java/seedu/address/logic/commands/SummaryCommand.java b/src/main/java/seedu/address/logic/commands/SummaryCommand.java
index adc6e56b018..1a567f3a2a4 100644
--- a/src/main/java/seedu/address/logic/commands/SummaryCommand.java
+++ b/src/main/java/seedu/address/logic/commands/SummaryCommand.java
@@ -11,14 +11,29 @@
  */
 public class SummaryCommand extends Command {
 
+    /**
+     * Stands for summary command.
+     */
     public static final String COMMAND_WORD = "summary";
 
+    /**
+     * Stands for the message of summary command.
+     */
     public static final String MESSAGE_USAGE = COMMAND_WORD
             + ": Shows summary for members and transactions.\n"
             + "Example: " + COMMAND_WORD;
 
+    /**
+     * Stands for the message of open summary window successfully.
+     */
     public static final String SHOWING_SUMMARY_MESSAGE = "Opened summary window.";
 
+    /**
+     * Overrides and executes model.
+     *
+     * @param model {@code Model} which the command should operate on.
+     * @return CommandResult
+     */
     @Override
     public CommandResult execute(Model model) {
         requireNonNull(model);
@@ -26,6 +41,12 @@ public CommandResult execute(Model model) {
                 false, false, false, true);
     }
 
+    /**
+     * Overrides the equals method.
+     *
+     * @param other
+     * @return boolean
+     */
     @Override
     public boolean equals(Object other) {
         return other == this
diff --git a/src/main/java/seedu/address/logic/commands/ViewCommand.java b/src/main/java/seedu/address/logic/commands/ViewCommand.java
index ec44e7e327d..9ec7508d25b 100644
--- a/src/main/java/seedu/address/logic/commands/ViewCommand.java
+++ b/src/main/java/seedu/address/logic/commands/ViewCommand.java
@@ -15,10 +15,19 @@
  */
 public class ViewCommand extends Command {
 
+    /**
+     * Stands for view command.
+     */
     public static final String COMMAND_WORD = "show";
 
+    /**
+     * Stands for the message of open view window successfully.
+     */
     public static final String SHOWING_VIEW_MESSAGE = "Opened view window.";
 
+    /**
+     * Stands for the message of show and view command.
+     */
     public static final String MESSAGE_USAGE = COMMAND_WORD
             + ": View a specific member's details, "
             + "accessed by member ID.\n"
@@ -31,12 +40,19 @@ public class ViewCommand extends Command {
 
     /**
      * Construct the view command based on member id predicate.
+     *
      * @param predicate
      */
     public ViewCommand(IdContainsKeywordsPredicate predicate) {
         this.predicate = predicate;
     }
 
+    /**
+     * Overrides and executes the model.
+     *
+     * @param model {@code Model} which the command should operate on.
+     * @return CommandResult
+     */
     @Override
     public CommandResult execute(Model model) {
         requireNonNull(model);
@@ -44,6 +60,12 @@ public CommandResult execute(Model model) {
         return new CommandResult(SHOWING_VIEW_MESSAGE, false, false, true, false);
     }
 
+    /**
+     * Override the equals method
+     *
+     * @param other
+     * @return boolean
+     */
     @Override
     public boolean equals(Object other) {
         return other == this // short circuit if same object
diff --git a/src/main/java/seedu/address/logic/commands/exceptions/CommandException.java b/src/main/java/seedu/address/logic/commands/exceptions/CommandException.java
index a16bd14f2cd..c99e6a64bf0 100644
--- a/src/main/java/seedu/address/logic/commands/exceptions/CommandException.java
+++ b/src/main/java/seedu/address/logic/commands/exceptions/CommandException.java
@@ -1,15 +1,26 @@
 package seedu.address.logic.commands.exceptions;
 
+import seedu.address.logic.commands.Command;
+
 /**
  * Represents an error which occurs during execution of a {@link Command}.
  */
 public class CommandException extends Exception {
+
+    /**
+     * Constructs a new {@code CommandException} with the specified detail {@code message}.
+     *
+     * @param message
+     */
     public CommandException(String message) {
         super(message);
     }
 
     /**
      * Constructs a new {@code CommandException} with the specified detail {@code message} and {@code cause}.
+     *
+     * @param message
+     * @param cause
      */
     public CommandException(String message, Throwable cause) {
         super(message, cause);
diff --git a/src/main/java/seedu/address/logic/parser/AddCommandParser.java b/src/main/java/seedu/address/logic/parser/AddCommandParser.java
index 2b123d057d9..a8fcbf622f9 100644
--- a/src/main/java/seedu/address/logic/parser/AddCommandParser.java
+++ b/src/main/java/seedu/address/logic/parser/AddCommandParser.java
@@ -11,6 +11,9 @@ public abstract class AddCommandParser {
     /**
      * Parses the given {@code String} of arguments in the context of the AddCommand
      * and returns an AddCommand object for execution.
+     *
+     * @param args
+     * @return AddCommand
      * @throws ParseException if the user input does not conform the expected format
      */
     public abstract AddCommand parse(String args) throws ParseException;
diff --git a/src/main/java/seedu/address/logic/parser/AddMemberCommandParser.java b/src/main/java/seedu/address/logic/parser/AddMemberCommandParser.java
index c8fdb3fad13..a4e1f8152fe 100644
--- a/src/main/java/seedu/address/logic/parser/AddMemberCommandParser.java
+++ b/src/main/java/seedu/address/logic/parser/AddMemberCommandParser.java
@@ -65,6 +65,9 @@ private String generateIdStub() {
     /**
      * Parses the given {@code String} of arguments in the context of the AddMemberCommand
      * and returns an AddMemberCommand object for execution.
+     *
+     * @param args
+     * @return AddMember
      * @throws ParseException if the user input does not conform the expected format
      */
     @Override
diff --git a/src/main/java/seedu/address/logic/parser/AddReservationCommandParser.java b/src/main/java/seedu/address/logic/parser/AddReservationCommandParser.java
index 9b48cb3bfe4..bcc1422eef4 100644
--- a/src/main/java/seedu/address/logic/parser/AddReservationCommandParser.java
+++ b/src/main/java/seedu/address/logic/parser/AddReservationCommandParser.java
@@ -58,6 +58,9 @@ private String generateIdStub() {
     /**
      * Parses the given {@code String} of arguments in the context of the AddReservationCommand
      * and returns an AddReservationCommand object for execution.
+     *
+     * @param args
+     * @return AddReservationCommand
      * @throws ParseException if the user input does not conform the expected format
      */
     @Override
diff --git a/src/main/java/seedu/address/logic/parser/AddTransactionCommandParser.java b/src/main/java/seedu/address/logic/parser/AddTransactionCommandParser.java
index 5641717bf57..11311aaaea2 100644
--- a/src/main/java/seedu/address/logic/parser/AddTransactionCommandParser.java
+++ b/src/main/java/seedu/address/logic/parser/AddTransactionCommandParser.java
@@ -60,6 +60,9 @@ private String generateIdStub() {
     /**
      * Parses the given {@code String} of arguments in the context of the AddTransactionCommand
      * and returns an AddTransactionCommand object for execution.
+     *
+     * @param args
+     * @return AddTransactionCommand
      * @throws ParseException if the user input does not conform the expected format
      */
     @Override
diff --git a/src/main/java/seedu/address/logic/parser/CliSyntax.java b/src/main/java/seedu/address/logic/parser/CliSyntax.java
index 960391a411a..d41cc81f417 100644
--- a/src/main/java/seedu/address/logic/parser/CliSyntax.java
+++ b/src/main/java/seedu/address/logic/parser/CliSyntax.java
@@ -6,25 +6,95 @@
 public class CliSyntax {
 
     /* Prefix definitions */
+    /**
+     * Stands for PREFIX_MEMBER.
+     */
     public static final Prefix PREFIX_MEMBER = new Prefix("-mem");
+
+    /**
+     * Stands for PREFIX_ID.
+     */
     public static final Prefix PREFIX_ID = new Prefix("-id");
+
+    /**
+     * Stands for PREFIX_INDEX.
+     */
     public static final Prefix PREFIX_INDEX = new Prefix("-row");
+
+    /**
+     * Stands for PREFIX_NAME.
+     */
     public static final Prefix PREFIX_NAME = new Prefix("-n");
+
+    /**
+     * Stands for PREFIX_PHONE.
+     */
     public static final Prefix PREFIX_PHONE = new Prefix("-p");
+
+    /**
+     * Stands for PREFIX_EMAIL.
+     */
     public static final Prefix PREFIX_EMAIL = new Prefix("-e");
+
+    /**
+     * Stands for PREFIX_ADDRESS.
+     */
     public static final Prefix PREFIX_ADDRESS = new Prefix("-a");
+
+    /**
+     * Stands for PREFIX_DATE.
+     */
     public static final Prefix PREFIX_DATE = new Prefix("-date");
+
+    /**
+     * Stands for PREFIX_CREDIT.
+     */
     public static final Prefix PREFIX_CREDIT = new Prefix("-c");
+
+    /**
+     * Stands for PREFIX_REDEEM.
+     */
     public static final Prefix PREFIX_REDEEM = new Prefix("-f");
+
+    /**
+     * Stands for PREFIX_TRANSACTION.
+     */
     public static final Prefix PREFIX_TRANSACTION = new Prefix("-txn");
+
+    /**
+     * Stands for PREFIX_BILLING.
+     */
     public static final Prefix PREFIX_BILLING = new Prefix("-b");
+
+    /**
+     * Stands for PREFIX_RESERVATION.
+     */
     public static final Prefix PREFIX_RESERVATION = new Prefix("-rsvn");
+
+    /**
+     * Stands for PREFIX_DATE_TIME.
+     */
     public static final Prefix PREFIX_DATE_TIME = new Prefix("-time");
+
+    /**
+     * Stands for PREFIX_REMARK.
+     */
     public static final Prefix PREFIX_REMARK = new Prefix("-rm");
+
+    /**
+     * Stands for PREFIX_TAG.
+     */
     public static final Prefix PREFIX_TAG = new Prefix("-tag");
 
 
     /* Only used in sort command */
+    /**
+     * Stands for PREFIX_ASC.
+     */
     public static final Prefix PREFIX_ASC = new Prefix("-a");
+
+    /**
+     * Stands for PREFIX_DESC.
+     */
     public static final Prefix PREFIX_DESC = new Prefix("-d");
 }
diff --git a/src/main/java/seedu/address/logic/parser/DeleteMemberCommandParser.java b/src/main/java/seedu/address/logic/parser/DeleteMemberCommandParser.java
index 711f4c29f8d..6100c65232c 100644
--- a/src/main/java/seedu/address/logic/parser/DeleteMemberCommandParser.java
+++ b/src/main/java/seedu/address/logic/parser/DeleteMemberCommandParser.java
@@ -21,6 +21,9 @@ public class DeleteMemberCommandParser extends DeleteCommandParser implements Pa
     /**
      * Parses the given {@code String} of arguments in the context of the DeleteMemberCommand
      * and returns a DeleteMemberCommand object for execution.
+     *
+     * @param args
+     * @return DeleteMemberCommand
      * @throws ParseException if the user input does not conform the expected format
      */
     public DeleteMemberCommand parse(String args) throws ParseException {
diff --git a/src/main/java/seedu/address/logic/parser/DeleteReservationCommandParser.java b/src/main/java/seedu/address/logic/parser/DeleteReservationCommandParser.java
index b47fe19c779..b378013f7ce 100644
--- a/src/main/java/seedu/address/logic/parser/DeleteReservationCommandParser.java
+++ b/src/main/java/seedu/address/logic/parser/DeleteReservationCommandParser.java
@@ -15,10 +15,12 @@
  * Parses input arguments and creates a new DeleteReservationCommand object
  */
 public class DeleteReservationCommandParser extends DeleteCommandParser implements Parser<DeleteReservationCommand> {
-
     /**
      * Parses the given {@code String} of arguments in the context of the DeleteReservationCommand
      * and returns a DeleteReservationCommand object for execution.
+     *
+     * @param args
+     * @return DeleteReservationCommand
      * @throws ParseException if the user input does not conform the expected format
      */
     public DeleteReservationCommand parse(String args) throws ParseException {
diff --git a/src/main/java/seedu/address/logic/parser/DeleteTransactionCommandParser.java b/src/main/java/seedu/address/logic/parser/DeleteTransactionCommandParser.java
index 5a59e86f80b..200e1214269 100644
--- a/src/main/java/seedu/address/logic/parser/DeleteTransactionCommandParser.java
+++ b/src/main/java/seedu/address/logic/parser/DeleteTransactionCommandParser.java
@@ -18,6 +18,9 @@ public class DeleteTransactionCommandParser extends DeleteCommandParser implemen
     /**
      * Parses the given {@code String} of arguments in the context of the DeleteTransactionCommand
      * and returns a DeleteTransactionCommand object for execution.
+     *
+     * @param args
+     * @return DeleteTransactionCommand
      * @throws ParseException if the user input does not conform the expected format
      */
     public DeleteTransactionCommand parse(String args) throws ParseException {
diff --git a/src/main/java/seedu/address/logic/parser/EditCommandParser.java b/src/main/java/seedu/address/logic/parser/EditCommandParser.java
index 078b99ea6fb..d34644cf73f 100644
--- a/src/main/java/seedu/address/logic/parser/EditCommandParser.java
+++ b/src/main/java/seedu/address/logic/parser/EditCommandParser.java
@@ -11,6 +11,9 @@ public abstract class EditCommandParser {
     /**
      * Parses the given {@code String} of arguments in the context of the EditCommand
      * and returns an EditCommand object for execution.
+     *
+     * @param args
+     * @return EditCommand
      * @throws ParseException if the user input does not conform the expected format
      */
     public abstract EditCommand parse(String args) throws ParseException;
diff --git a/src/main/java/seedu/address/logic/parser/EditMemberCommandParser.java b/src/main/java/seedu/address/logic/parser/EditMemberCommandParser.java
index 9f5397219b6..f783512135d 100644
--- a/src/main/java/seedu/address/logic/parser/EditMemberCommandParser.java
+++ b/src/main/java/seedu/address/logic/parser/EditMemberCommandParser.java
@@ -33,6 +33,9 @@ public class EditMemberCommandParser extends EditCommandParser implements Parser
     /**
      * Parses the given {@code String} of arguments in the context of the EditMemberCommand
      * and returns an EditMemberCommand object for execution.
+     *
+     * @param args
+     * @return EditMemberCommand
      * @throws ParseException if the user input does not conform the expected format
      */
     public EditMemberCommand parse(String args) throws ParseException {
diff --git a/src/main/java/seedu/address/logic/parser/EditReservationCommandParser.java b/src/main/java/seedu/address/logic/parser/EditReservationCommandParser.java
index 595b9626c45..5a6fa313783 100644
--- a/src/main/java/seedu/address/logic/parser/EditReservationCommandParser.java
+++ b/src/main/java/seedu/address/logic/parser/EditReservationCommandParser.java
@@ -31,6 +31,9 @@ public EditReservationCommandParser(ExecutionStatus executionStatus) {
     /**
      * Parses the given {@code String} of arguments in the context of the EditCommand
      * and returns an EditCommand object for execution.
+     *
+     * @param args
+     * @return EditReservationCommand
      * @throws ParseException if the user input does not conform the expected format
      */
     public EditReservationCommand parse(String args) throws ParseException {
diff --git a/src/main/java/seedu/address/logic/parser/EditTransactionCommandParser.java b/src/main/java/seedu/address/logic/parser/EditTransactionCommandParser.java
index aa2123b48cf..89bf3f72a6a 100644
--- a/src/main/java/seedu/address/logic/parser/EditTransactionCommandParser.java
+++ b/src/main/java/seedu/address/logic/parser/EditTransactionCommandParser.java
@@ -30,8 +30,11 @@ public EditTransactionCommandParser(ExecutionStatus executionStatus) {
     }
 
     /**
-     * Parses the given {@code String} of arguments in the context of the EditCommand
-     * and returns an EditCommand object for execution.
+     * Parses the given {@code String} of arguments in the context of the EditTransactionCommand
+     * and returns an EditTransactionCommand object for execution.
+     *
+     * @param args
+     * @return EditTransactionCommand
      * @throws ParseException if the user input does not conform the expected format
      */
     public EditTransactionCommand parse(String args) throws ParseException {
diff --git a/src/main/java/seedu/address/logic/parser/FindCommandParser.java b/src/main/java/seedu/address/logic/parser/FindCommandParser.java
index 497091a78ce..6c7d8dc7ab4 100644
--- a/src/main/java/seedu/address/logic/parser/FindCommandParser.java
+++ b/src/main/java/seedu/address/logic/parser/FindCommandParser.java
@@ -29,6 +29,9 @@ public class FindCommandParser implements Parser<FindCommand> {
     /**
      * Parses the given {@code String} of arguments in the context of the FindCommand
      * and returns a FindCommand object for execution.
+     *
+     * @param args
+     * @return FindCommand
      * @throws ParseException if the user input does not conform the expected format
      */
     public FindCommand parse(String args) throws ParseException {
diff --git a/src/main/java/seedu/address/logic/parser/ListCommandParser.java b/src/main/java/seedu/address/logic/parser/ListCommandParser.java
index 56d6306c548..e624338bfce 100644
--- a/src/main/java/seedu/address/logic/parser/ListCommandParser.java
+++ b/src/main/java/seedu/address/logic/parser/ListCommandParser.java
@@ -17,6 +17,9 @@ public class ListCommandParser implements Parser<ListCommand> {
     /**
      * Parses the given {@code String} of arguments in the context of the ListCommand
      * and returns a ListCommand object for execution.
+     *
+     * @param args
+     * @return ListCommand
      * @throws ParseException if the user input does not conform the expected format
      */
     public ListCommand parse(String args) throws ParseException {
diff --git a/src/main/java/seedu/address/logic/parser/LoginCommandParser.java b/src/main/java/seedu/address/logic/parser/LoginCommandParser.java
index 8d3a44a1477..a1808b2af94 100644
--- a/src/main/java/seedu/address/logic/parser/LoginCommandParser.java
+++ b/src/main/java/seedu/address/logic/parser/LoginCommandParser.java
@@ -14,6 +14,9 @@ public class LoginCommandParser implements Parser<LoginCommand> {
     /**
      * Parses the given {@code String} of arguments in the context of the LoginCommand
      * and returns a LoginCommand object for execution.
+     *
+     * @param args
+     * @return LoginCommand
      * @throws ParseException if the user input does not conform the expected format
      */
     public LoginCommand parse(String args) throws ParseException {
diff --git a/src/main/java/seedu/address/logic/parser/Prefix.java b/src/main/java/seedu/address/logic/parser/Prefix.java
index 067610481ab..23f06148835 100644
--- a/src/main/java/seedu/address/logic/parser/Prefix.java
+++ b/src/main/java/seedu/address/logic/parser/Prefix.java
@@ -7,23 +7,45 @@
 public class Prefix {
     private final String prefix;
 
+    /**
+     * Constructs a {@code Prefix} with the given {@code String}.
+     *
+     * @param prefix
+     */
     public Prefix(String prefix) {
         this.prefix = prefix;
     }
 
+    /**
+     * Gets prefix.
+     *
+     * @return
+     */
     public String getPrefix() {
         return prefix;
     }
 
+
     public String toString() {
         return getPrefix();
     }
 
+    /**
+     * Overrides the method hashCode.
+     *
+     * @return
+     */
     @Override
     public int hashCode() {
         return prefix == null ? 0 : prefix.hashCode();
     }
 
+    /**
+     * Overrides equals method.
+     *
+     * @param obj
+     * @return boolean
+     */
     @Override
     public boolean equals(Object obj) {
         if (!(obj instanceof Prefix)) {
diff --git a/src/main/java/seedu/address/logic/parser/RedeemCommandParser.java b/src/main/java/seedu/address/logic/parser/RedeemCommandParser.java
index c4682393a03..e0fe5e1c202 100644
--- a/src/main/java/seedu/address/logic/parser/RedeemCommandParser.java
+++ b/src/main/java/seedu/address/logic/parser/RedeemCommandParser.java
@@ -25,7 +25,7 @@ public class RedeemCommandParser implements Parser<RedeemCommand> {
     private final ExecutionStatus executionStatus;
 
     /**
-     * Constructs a {@code AddTransactionCommandParser} with the given {@code ExecutionStatus}.
+     * Constructs a {@code RedeemCommandParser} with the given {@code Model} and {@code ExecutionStatus}.
      */
     public RedeemCommandParser(Model model, ExecutionStatus executionStatus) {
         this.model = model;
@@ -33,8 +33,12 @@ public RedeemCommandParser(Model model, ExecutionStatus executionStatus) {
     }
 
     /**
-     * Parses the given {@code String} of arguments in the context of the RedeemPointCommand
-     * and returns an RedeemPointCommand object for execution.
+     * Parses the given {@code String} of arguments in the context of the RedeemCommand
+     * and returns an RedeemCommand object for execution.
+     *
+     * @param args
+     * @return RedeemCommand
+     * @throws ParseException if the user input does not conform the expected format
      */
     @Override
     public RedeemCommand parse(String args) throws ParseException {
diff --git a/src/main/java/seedu/address/logic/parser/SortCommandParser.java b/src/main/java/seedu/address/logic/parser/SortCommandParser.java
index aeb7cf1ccc5..f5def3980ba 100644
--- a/src/main/java/seedu/address/logic/parser/SortCommandParser.java
+++ b/src/main/java/seedu/address/logic/parser/SortCommandParser.java
@@ -21,6 +21,9 @@ public class SortCommandParser implements Parser<SortCommand> {
     /**
      * Parses the given {@code String} of arguments in the context of the SortCommand
      * and returns a SortCommand object for execution.
+     *
+     * @param args
+     * @return SortCommand
      * @throws ParseException if the user input does not conform the expected format
      */
     public SortCommand parse(String args) throws ParseException {
diff --git a/src/main/java/seedu/address/logic/parser/ViewCommandParser.java b/src/main/java/seedu/address/logic/parser/ViewCommandParser.java
index 39d266320cd..7344f2823d0 100644
--- a/src/main/java/seedu/address/logic/parser/ViewCommandParser.java
+++ b/src/main/java/seedu/address/logic/parser/ViewCommandParser.java
@@ -20,6 +20,8 @@ public class ViewCommandParser implements Parser<Command> {
      * Parses the given {@code String} of arguments in the context of the ViewCommand
      * and returns a ViewCommand object for execution.
      *
+     * @param args
+     * @return ViewCommand
      * @throws ParseException if the user input does not conform the expected format
      */
     public ViewCommand parse(String args) throws ParseException {
diff --git a/src/main/java/seedu/address/logic/parser/exceptions/ParseException.java b/src/main/java/seedu/address/logic/parser/exceptions/ParseException.java
index 158a1a54c1c..fa850c7617c 100644
--- a/src/main/java/seedu/address/logic/parser/exceptions/ParseException.java
+++ b/src/main/java/seedu/address/logic/parser/exceptions/ParseException.java
@@ -6,11 +6,21 @@
  * Represents a parse error encountered by a parser.
  */
 public class ParseException extends IllegalValueException {
-
+    /**
+     * Parses the exception with string message.
+     *
+     * @param message
+     */
     public ParseException(String message) {
         super(message);
     }
 
+    /**
+     * Parses the exception with string message amd throwable cause.
+     *
+     * @param message
+     * @param cause
+     */
     public ParseException(String message, Throwable cause) {
         super(message, cause);
     }
diff --git a/src/main/java/seedu/address/model/account/Password.java b/src/main/java/seedu/address/model/account/Password.java
index 2af7015e8b9..828ec5d3d90 100644
--- a/src/main/java/seedu/address/model/account/Password.java
+++ b/src/main/java/seedu/address/model/account/Password.java
@@ -9,10 +9,23 @@
  */
 public class Password {
 
+    /**
+     * Stands for default password.
+     */
     public static final String DEFAULT_PLAINTEXT_PASSWORD = "123456";
+    /**
+     * Stands for password message constraints.
+     */
     public static final String MESSAGE_CONSTRAINTS =
             "Passwords should only contain 32 alphanumeric characters or empty, and it should not be blank";
+    /**
+     * Stands for validation regex.
+     */
     public static final String VALIDATION_REGEX = "[\\p{Alnum}]*";
+
+    /**
+     * Stands for password length.
+     */
     public static final int LENGTH = 32;
 
     public final String value;
@@ -31,15 +44,29 @@ public Password(String password) {
     /**
      * Returns true if a given string is a valid password.
      */
+    /**
+     * Returns true if a given string is a valid password.
+     *
+     * @param test
+     * @return boolean
+     */
     public static boolean isValidPassword(String test) {
         return test.isEmpty() || (test.matches(VALIDATION_REGEX) && test.length() == LENGTH);
     }
 
+    /**
+     * Overrides toString method.
+     * @return String
+     */
     @Override
     public String toString() {
         return value;
     }
 
+    /**
+     * Overrides equals method.
+     * @return boolean
+     */
     @Override
     public boolean equals(Object other) {
         return other == this // short circuit if same object
@@ -47,6 +74,10 @@ public boolean equals(Object other) {
                 && value.equals(((Password) other).value)); // state check
     }
 
+    /**
+     * Overrides hashCode method.
+     * @return int
+     */
     @Override
     public int hashCode() {
         return value.hashCode();
diff --git a/src/main/java/seedu/address/model/member/Address.java b/src/main/java/seedu/address/model/member/Address.java
index 7d362ee0e70..c646bb86384 100644
--- a/src/main/java/seedu/address/model/member/Address.java
+++ b/src/main/java/seedu/address/model/member/Address.java
@@ -9,10 +9,13 @@
  */
 public class Address {
 
+    /**
+     * Stands for address message constraints.
+     */
     public static final String MESSAGE_CONSTRAINTS = "Addresses can take any values, and it should not be blank";
 
-    /*
-     * The first character of the address must not be a whitespace,
+    /**
+     * Stands for the first character of the address must not be a whitespace,
      * otherwise " " (a blank string) becomes a valid input.
      */
     public static final String VALIDATION_REGEX = "[^\\s].*";
@@ -22,7 +25,7 @@ public class Address {
     /**
      * Constructs an {@code Address}.
      *
-     * @param address A valid address.
+     * @param address a valid address.
      */
     public Address(String address) {
         requireNonNull(address);
@@ -37,11 +40,21 @@ public static boolean isValidAddress(String test) {
         return test.matches(VALIDATION_REGEX);
     }
 
+    /**
+     * Overrides toString method.
+     *
+     * @return String
+     */
     @Override
     public String toString() {
         return value;
     }
 
+    /**
+     * Overrides equals method.
+     *
+     * @return boolean
+     */
     @Override
     public boolean equals(Object other) {
         return other == this // short circuit if same object
@@ -49,6 +62,11 @@ public boolean equals(Object other) {
                 && value.equals(((Address) other).value)); // state check
     }
 
+    /**
+     * Overrides hashCode method.
+     *
+     * @return int
+     */
     @Override
     public int hashCode() {
         return value.hashCode();
diff --git a/src/main/java/seedu/address/model/member/Credit.java b/src/main/java/seedu/address/model/member/Credit.java
index dbe2a664c42..0b9eedece8b 100644
--- a/src/main/java/seedu/address/model/member/Credit.java
+++ b/src/main/java/seedu/address/model/member/Credit.java
@@ -9,18 +9,36 @@
  */
 public class Credit {
 
+    /**
+     * Stands for credits message constraints.
+     */
     public static final String MESSAGE_CONSTRAINTS =
             "Credits should only contain digits, and it should not be blank";
+
+    /**
+     * Stands for validation regex.
+     */
     public static final String VALIDATION_REGEX = "[\\p{Digit}]*";
+
+    /**
+     * Stands for the max credit number.
+     */
     public static final int MAX = 99999999;
+
+    /**
+     * Stands for the length of credit.
+     */
     public static final int LENGTH = 8; // Max credit is 99999999
 
+    /**
+     * Stands for the credit value.
+     */
     public final String value;
 
     /**
      * Constructs a {@code Credit}.
      *
-     * @param credit A valid credit.
+     * @param credit a valid credit.
      */
     public Credit(String credit) {
         requireNonNull(credit);
@@ -31,29 +49,45 @@ public Credit(String credit) {
     /**
      * Returns true if a given string is a valid credit.
      */
+    /**
+     * Returns true if a given string is a valid credit.
+     *
+     * @param test
+     * @return boolean
+     */
     public static boolean isValidCredit(String test) {
         return test.matches(VALIDATION_REGEX) && test.length() <= LENGTH;
     }
 
     /**
-     * Returns int value of credit.
+     * Gets int value of credit.
      */
     public int getIntValue() {
         return Integer.parseInt(value);
     }
 
     /**
-     * Returns String value of credit for Point use.
+     * Gets String value of credit for Point use.
      */
     public String getStringValue() {
         return value;
     }
 
+    /**
+     * Overrides toString method.
+     *
+     * @return String
+     */
     @Override
     public String toString() {
         return value;
     }
 
+    /**
+     * Overrides equals method.
+     *
+     * @return boolean
+     */
     @Override
     public boolean equals(Object other) {
         return other == this // short circuit if same object
@@ -61,6 +95,11 @@ public boolean equals(Object other) {
                 && value.equals(((Credit) other).value)); // state check
     }
 
+    /**
+     * Overrides hashCode method.
+     *
+     * @return int
+     */
     @Override
     public int hashCode() {
         return value.hashCode();
diff --git a/src/main/java/seedu/address/model/member/CreditSortComparator.java b/src/main/java/seedu/address/model/member/CreditSortComparator.java
index 17bc96ec86a..06c6edd9f79 100644
--- a/src/main/java/seedu/address/model/member/CreditSortComparator.java
+++ b/src/main/java/seedu/address/model/member/CreditSortComparator.java
@@ -11,14 +11,31 @@ public class CreditSortComparator implements Comparator<Member> {
 
     private final SortStatus sortStatus;
 
+    /**
+     * Constructs a {@code CreditSortComparator} with input {@code SortStatus}.
+     *
+     * @param sortStatus
+     */
     public CreditSortComparator(SortStatus sortStatus) {
         this.sortStatus = sortStatus;
     }
 
+    /**
+     * Gets sort status.
+     *
+     * @return SortStatus
+     */
     public SortStatus getSortStatus() {
         return sortStatus;
     }
 
+    /**
+     * Overrides comapre method.
+     *
+     * @param m1
+     * @param m2
+     * @return int
+     */
     @Override
     public int compare(Member m1, Member m2) {
         if (sortStatus == SortStatus.DESC) {
@@ -28,6 +45,11 @@ public int compare(Member m1, Member m2) {
         }
     }
 
+    /**
+     * Overrides equals method.
+     *
+     * @return boolean
+     */
     @Override
     public boolean equals(Object other) {
         return other == this // short circuit if same object
diff --git a/src/main/java/seedu/address/model/member/Email.java b/src/main/java/seedu/address/model/member/Email.java
index 703e818cad3..08332704ab0 100644
--- a/src/main/java/seedu/address/model/member/Email.java
+++ b/src/main/java/seedu/address/model/member/Email.java
@@ -10,6 +10,10 @@
 public class Email {
 
     private static final String SPECIAL_CHARACTERS = "+_.-";
+
+    /**
+     * Stands for message constraints for email.
+     */
     public static final String MESSAGE_CONSTRAINTS = "Emails should be of the format local-part@domain "
             + "and adhere to the following constraints:\n"
             + "1. The local-part should only contain alphanumeric characters and these special characters, excluding "
@@ -29,14 +33,21 @@ public class Email {
             + "(-" + ALPHANUMERIC_NO_UNDERSCORE + ")*";
     private static final String DOMAIN_LAST_PART_REGEX = "(" + DOMAIN_PART_REGEX + "){2,}$"; // At least two chars
     private static final String DOMAIN_REGEX = "(" + DOMAIN_PART_REGEX + "\\.)*" + DOMAIN_LAST_PART_REGEX;
+
+    /**
+     * Stands for validation regex should includes @ in between.
+     */
     public static final String VALIDATION_REGEX = LOCAL_PART_REGEX + "@" + DOMAIN_REGEX;
 
+    /**
+     * Stands for email string.
+     */
     public final String value;
 
     /**
      * Constructs an {@code Email}.
      *
-     * @param email A valid email address.
+     * @param email a valid email address.
      */
     public Email(String email) {
         requireNonNull(email);
@@ -51,11 +62,21 @@ public static boolean isValidEmail(String test) {
         return test.matches(VALIDATION_REGEX);
     }
 
+    /**
+     * Overrides toString method.
+     *
+     * @return String
+     */
     @Override
     public String toString() {
         return value;
     }
 
+    /**
+     * Overrides equals method.
+     *
+     * @return boolean
+     */
     @Override
     public boolean equals(Object other) {
         return other == this // short circuit if same object
@@ -63,6 +84,11 @@ public boolean equals(Object other) {
                 && value.equals(((Email) other).value)); // state check
     }
 
+    /**
+     * Overrides hashCode method.
+     *
+     * @return int
+     */
     @Override
     public int hashCode() {
         return value.hashCode();
diff --git a/src/main/java/seedu/address/model/member/EmailContainsKeywordsPredicate.java b/src/main/java/seedu/address/model/member/EmailContainsKeywordsPredicate.java
index b43164a31e3..764caf3efdf 100644
--- a/src/main/java/seedu/address/model/member/EmailContainsKeywordsPredicate.java
+++ b/src/main/java/seedu/address/model/member/EmailContainsKeywordsPredicate.java
@@ -11,16 +11,32 @@
 public class EmailContainsKeywordsPredicate implements Predicate<Member> {
     private final List<String> keywords;
 
+    /**
+     * Constructs {@code EmailContainsKeywordsPredicate} with input {@code List<String>}.
+     *
+     * @param keywords
+     */
     public EmailContainsKeywordsPredicate(List<String> keywords) {
         this.keywords = keywords;
     }
 
+    /**
+     * Overrides test method.
+     *
+     * @param member
+     * @return boolean
+     */
     @Override
     public boolean test(Member member) {
         return keywords.stream()
                 .anyMatch(keyword -> StringUtil.containsWordIgnoreCase(member.getEmail().value, keyword));
     }
 
+    /**
+     * Overrides equals method.
+     *
+     * @return boolean
+     */
     @Override
     public boolean equals(Object other) {
         return other == this // short circuit if same object
diff --git a/src/main/java/seedu/address/model/member/Id.java b/src/main/java/seedu/address/model/member/Id.java
index 78a41b9708a..2529c6e71f5 100644
--- a/src/main/java/seedu/address/model/member/Id.java
+++ b/src/main/java/seedu/address/model/member/Id.java
@@ -9,12 +9,30 @@
  */
 public class Id {
 
+    /**
+     * Stands for Id message constraints.
+     */
     public static final String MESSAGE_CONSTRAINTS =
             "Ids should only contain 5 digits, and it should not be blank";
+
+    /**
+     * Stands for validation regex of Id.
+     */
     public static final String VALIDATION_REGEX = "[\\p{Digit}]*";
+
+    /**
+     * Stands for pattern of Id.
+     */
     public static final String PATTERN = "%05d";
+
+    /**
+     * Stands for length of Id is five.
+     */
     public static final int LENGTH = 5;
 
+    /**
+     * Stands Id value.
+     */
     public final String value;
 
     /**
@@ -30,16 +48,29 @@ public Id(String id) {
 
     /**
      * Returns true if a given string is a valid id.
+     *
+     * @param test
+     * @return boolean
      */
     public static boolean isValidId(String test) {
         return test.matches(VALIDATION_REGEX) && test.length() == LENGTH;
     }
 
+    /**
+     * Overrides toString method.
+     *
+     * @return String
+     */
     @Override
     public String toString() {
         return value;
     }
 
+    /**
+     * Overrides equals method.
+     *
+     * @return boolean
+     */
     @Override
     public boolean equals(Object other) {
         return other == this // short circuit if same object
@@ -47,6 +78,11 @@ public boolean equals(Object other) {
                 && value.equals(((Id) other).value)); // state check
     }
 
+    /**
+     * Overrides hashCode method.
+     *
+     * @return int
+     */
     @Override
     public int hashCode() {
         return value.hashCode();
diff --git a/src/main/java/seedu/address/model/member/IdContainsKeywordsPredicate.java b/src/main/java/seedu/address/model/member/IdContainsKeywordsPredicate.java
index 4b6dfa5e5cd..ec0a8a418b6 100644
--- a/src/main/java/seedu/address/model/member/IdContainsKeywordsPredicate.java
+++ b/src/main/java/seedu/address/model/member/IdContainsKeywordsPredicate.java
@@ -11,16 +11,32 @@
 public class IdContainsKeywordsPredicate implements Predicate<Member> {
     private final List<String> keywords;
 
+    /**
+     * Constructs a {@code IdContainsKeywordsPredicate} with input {List<String>}.
+     *
+     * @param keywords
+     */
     public IdContainsKeywordsPredicate(List<String> keywords) {
         this.keywords = keywords;
     }
 
+    /**
+     * Overrides test method.
+     *
+     * @param member
+     * @return boolean
+     */
     @Override
     public boolean test(Member member) {
         return keywords.stream()
                 .anyMatch(keyword -> StringUtil.containsWordIgnoreCase(member.getId().value, keyword));
     }
 
+    /**
+     * Overrides equals method.
+     *
+     * @return boolean
+     */
     @Override
     public boolean equals(Object other) {
         return other == this // short circuit if same object
diff --git a/src/main/java/seedu/address/model/member/Member.java b/src/main/java/seedu/address/model/member/Member.java
index dae5abb13f4..b2b4cf2e38f 100644
--- a/src/main/java/seedu/address/model/member/Member.java
+++ b/src/main/java/seedu/address/model/member/Member.java
@@ -38,8 +38,25 @@ public class Member {
     private final List<Reservation> reservations = new ArrayList<>();
 
     /**
+     *
+     */
+    /**
+     * Constructs {code Member} with follow param.
      * Every field must be present and not null.
+     *
+     * @param id
+     * @param name
+     * @param phone
+     * @param email
+     * @param address
+     * @param timestamp
+     * @param credit
+     * @param point
+     * @param transactions
+     * @param reservations
+     * @param tags
      */
+
     public Member(Id id, Name name, Phone phone, Email email, Address address,
                   Timestamp timestamp, Credit credit, Point point, List<Transaction> transactions,
                   List<Reservation> reservations, Set<Tag> tags) {
@@ -57,34 +74,74 @@ public Member(Id id, Name name, Phone phone, Email email, Address address,
         this.reservations.addAll(reservations);
     }
 
+    /**
+     * Gets Id.
+     *
+     * @return Id
+     */
     public Id getId() {
         return id;
     }
 
+    /**
+     * Gets name.
+     *
+     * @return name
+     */
     public Name getName() {
         return name;
     }
 
+    /**
+     * Gets phone.
+     *
+     * @return Phone
+     */
     public Phone getPhone() {
         return phone;
     }
 
+    /**
+     * Gets email.
+     *
+     * @return Email
+     */
     public Email getEmail() {
         return email;
     }
 
+    /**
+     * Gets address.
+     *
+     * @return Address
+     */
     public Address getAddress() {
         return address;
     }
 
+    /**
+     * Gets timestamp.
+     *
+     * @return Timestamp
+     */
     public Timestamp getTimestamp() {
         return timestamp;
     }
 
+    /**
+     * Gets credit.
+     *
+     * @return Credit
+     */
     public Credit getCredit() {
         return credit;
     }
 
+    /**
+     * Gets point.
+     *
+     * @return Point
+     */
     public Point getPoint() {
         return this.point;
     }
@@ -92,6 +149,8 @@ public Point getPoint() {
     /**
      * Returns an immutable tag set, which throws {@code UnsupportedOperationException}
      * if modification is attempted.
+     *
+     * @return Set<Tag>
      */
     public Set<Tag> getTags() {
         return Collections.unmodifiableSet(tags);
diff --git a/src/main/java/seedu/address/model/member/Name.java b/src/main/java/seedu/address/model/member/Name.java
index 349ea3854c1..a30d07596bc 100644
--- a/src/main/java/seedu/address/model/member/Name.java
+++ b/src/main/java/seedu/address/model/member/Name.java
@@ -9,15 +9,21 @@
  */
 public class Name {
 
+    /**
+     * Stands for message constraints of name.
+     */
     public static final String MESSAGE_CONSTRAINTS =
             "Names should only contain alphanumeric characters and spaces, and it should not be blank";
 
-    /*
-     * The first character of the name must not be a whitespace,
+    /**
+     * Stands for the first character of the name must not be a whitespace,
      * otherwise " " (a blank string) becomes a valid input.
      */
     public static final String VALIDATION_REGEX = "[\\p{Alnum}][\\p{Alnum} ]*";
 
+    /**
+     * Stands for full name value
+     */
     public final String fullName;
 
     /**
@@ -38,11 +44,21 @@ public static boolean isValidName(String test) {
         return test.matches(VALIDATION_REGEX);
     }
 
+    /**
+     * Overrides toString method.
+     *
+     * @return String
+     */
     @Override
     public String toString() {
         return fullName;
     }
 
+    /**
+     * Overrides equals method.
+     *
+     * @return boolean
+     */
     @Override
     public boolean equals(Object other) {
         return other == this // short circuit if same object
@@ -50,6 +66,11 @@ public boolean equals(Object other) {
                 && fullName.equals(((Name) other).fullName)); // state check
     }
 
+    /**
+     * Overrides hashCode method.
+     *
+     * @return int
+     */
     @Override
     public int hashCode() {
         return fullName.hashCode();
diff --git a/src/main/java/seedu/address/model/member/NameContainsKeywordsPredicate.java b/src/main/java/seedu/address/model/member/NameContainsKeywordsPredicate.java
index 41763403cd1..7de43eb5aa8 100644
--- a/src/main/java/seedu/address/model/member/NameContainsKeywordsPredicate.java
+++ b/src/main/java/seedu/address/model/member/NameContainsKeywordsPredicate.java
@@ -11,16 +11,32 @@
 public class NameContainsKeywordsPredicate implements Predicate<Member> {
     private final List<String> keywords;
 
+    /**
+     * Constructs {@code NameContainsKeywordsPredicate} with input {@code List<String>}.
+     *
+     * @param keywords
+     */
     public NameContainsKeywordsPredicate(List<String> keywords) {
         this.keywords = keywords;
     }
 
+    /**
+     * Overrides test method.
+     *
+     * @param member
+     * @return boolean
+     */
     @Override
     public boolean test(Member member) {
         return keywords.stream()
                 .anyMatch(keyword -> StringUtil.containsWordIgnoreCase(member.getName().fullName, keyword));
     }
 
+    /**
+     * Overrides equals method.
+     *
+     * @return boolean
+     */
     @Override
     public boolean equals(Object other) {
         return other == this // short circuit if same object
diff --git a/src/main/java/seedu/address/model/member/Phone.java b/src/main/java/seedu/address/model/member/Phone.java
index 0c496f1f57b..04228dca562 100644
--- a/src/main/java/seedu/address/model/member/Phone.java
+++ b/src/main/java/seedu/address/model/member/Phone.java
@@ -18,7 +18,7 @@ public class Phone {
     /**
      * Constructs a {@code Phone}.
      *
-     * @param phone A valid phone number.
+     * @param phone a valid phone number.
      */
     public Phone(String phone) {
         requireNonNull(phone);
@@ -28,16 +28,29 @@ public Phone(String phone) {
 
     /**
      * Returns true if a given string is a valid phone number.
+     *
+     * @param test
+     * @return boolean
      */
     public static boolean isValidPhone(String test) {
         return test.matches(VALIDATION_REGEX);
     }
 
+    /**
+     * Overrides toString method.
+     *
+     * @return String
+     */
     @Override
     public String toString() {
         return value;
     }
 
+    /**
+     * Overrides equals method.
+     *
+     * @return boolean
+     */
     @Override
     public boolean equals(Object other) {
         return other == this // short circuit if same object
@@ -45,6 +58,11 @@ public boolean equals(Object other) {
                 && value.equals(((Phone) other).value)); // state check
     }
 
+    /**
+     * Overrides hashCode method.
+     *
+     * @return int
+     */
     @Override
     public int hashCode() {
         return value.hashCode();
diff --git a/src/main/java/seedu/address/model/member/PhoneContainsKeywordsPredicate.java b/src/main/java/seedu/address/model/member/PhoneContainsKeywordsPredicate.java
index 0d262b54180..ca35aa07d76 100644
--- a/src/main/java/seedu/address/model/member/PhoneContainsKeywordsPredicate.java
+++ b/src/main/java/seedu/address/model/member/PhoneContainsKeywordsPredicate.java
@@ -11,16 +11,32 @@
 public class PhoneContainsKeywordsPredicate implements Predicate<Member> {
     private final List<String> keywords;
 
+    /**
+     * Constructs a {@code PhoneContainsKeywordsPredicate} with input {@code List<String>}.
+     *
+     * @param keywords
+     */
     public PhoneContainsKeywordsPredicate(List<String> keywords) {
         this.keywords = keywords;
     }
 
+    /**
+     * Overrides test method.
+     *
+     * @param member
+     * @return boolean
+     */
     @Override
     public boolean test(Member member) {
         return keywords.stream()
                 .anyMatch(keyword -> StringUtil.containsWordIgnoreCase(member.getPhone().value, keyword));
     }
 
+    /**
+     * Overrides equals method.
+     *
+     * @return boolean
+     */
     @Override
     public boolean equals(Object other) {
         return other == this // short circuit if same object
diff --git a/src/main/java/seedu/address/model/member/Point.java b/src/main/java/seedu/address/model/member/Point.java
index e8ce0f944d2..da438d7eb11 100644
--- a/src/main/java/seedu/address/model/member/Point.java
+++ b/src/main/java/seedu/address/model/member/Point.java
@@ -8,19 +8,36 @@
  * and it can be redeem from a redemption process
  */
 public class Point {
+    /**
+     * Stands for message constraints for point.
+     */
     public static final String MESSAGE_CONSTRAINTS =
             "Points should only contain digits, and it should not be blank";
+
+    /**
+     * Stands for validation regex.
+     */
     public static final String VALIDATION_REGEX = "[\\p{Digit}]*";
 
+    /**
+     * Stands for point max value.
+     */
     public static final int MAX = 99999999;
+
+    /**
+     * Stands for point max length
+     */
     public static final int LENGTH = 8; // Max point is 99999999
 
+    /**
+     * Stands for point value
+     */
     public final String value;
 
     /**
      * Constructs a {@code Point}.
      *
-     * @param point A valid point.
+     * @param point a valid point
      */
     public Point(String point) {
         requireNonNull(point);
@@ -30,6 +47,9 @@ public Point(String point) {
 
     /**
      * Returns true if a given string is a valid point.
+     *
+     * @param test
+     * @return boolean
      */
     public static boolean isValidPoint(String test) {
         return test.matches(VALIDATION_REGEX) && test.length() <= LENGTH;
@@ -37,16 +57,28 @@ public static boolean isValidPoint(String test) {
 
     /**
      * Returns int value of point.
+     *
+     * @return int
      */
     public int getIntValue() {
         return Integer.parseInt(value);
     }
 
+    /**
+     * Overrides toString method.
+     *
+     * @return String
+     */
     @Override
     public String toString() {
         return value;
     }
 
+    /**
+     * Overrides equals method.
+     *
+     * @return boolean
+     */
     @Override
     public boolean equals(Object other) {
         return other == this // short circuit if same object
@@ -54,6 +86,11 @@ public boolean equals(Object other) {
                 && value.equals(((Point) other).value)); // state check
     }
 
+    /**
+     * Overrides hashCode method.
+     *
+     * @return int
+     */
     @Override
     public int hashCode() {
         return value.hashCode();
@@ -61,6 +98,8 @@ public int hashCode() {
 
     /**
      * Returns double value of transaction amount.
+     *
+     * @return double
      */
     public double getDoubleValue() {
         return Double.parseDouble(value);
diff --git a/src/main/java/seedu/address/model/member/RegistrationDateContainsKeywordsPredicate.java b/src/main/java/seedu/address/model/member/RegistrationDateContainsKeywordsPredicate.java
index 3aa27d95db7..a3763282037 100644
--- a/src/main/java/seedu/address/model/member/RegistrationDateContainsKeywordsPredicate.java
+++ b/src/main/java/seedu/address/model/member/RegistrationDateContainsKeywordsPredicate.java
@@ -17,10 +17,21 @@ public class RegistrationDateContainsKeywordsPredicate implements Predicate<Memb
 
     private final List<String> keywords;
 
+    /**
+     *  Constructs a {@code RegistrationDateContainsKeywordsPredicate} with input {@code List<String>}.
+     *
+     * @param keywords
+     */
     public RegistrationDateContainsKeywordsPredicate(List<String> keywords) {
         this.keywords = keywords;
     }
 
+    /**
+     * Overrides test method.
+     *
+     * @param member
+     * @return boolean
+     */
     @Override
     public boolean test(Member member) {
         return keywords.stream().anyMatch(keyword -> {
@@ -34,6 +45,11 @@ public boolean test(Member member) {
         });
     }
 
+    /**
+     * Overrides equals method.
+     * 
+     * @return boolean
+     */
     @Override
     public boolean equals(Object other) {
         return other == this // short circuit if same object
diff --git a/src/main/java/seedu/address/model/member/UniqueMemberList.java b/src/main/java/seedu/address/model/member/UniqueMemberList.java
index 4242ecaa907..c988eb6dc08 100644
--- a/src/main/java/seedu/address/model/member/UniqueMemberList.java
+++ b/src/main/java/seedu/address/model/member/UniqueMemberList.java
@@ -33,6 +33,7 @@ public class UniqueMemberList implements Iterable<Member> {
      * Returns a member identified by id.
      * @param id
      * @return member
+     * @throws MemberNotFoundException
      */
     public Member getMemberById(Id id) throws MemberNotFoundException {
         for (Member entry : internalList) {
@@ -45,6 +46,9 @@ public Member getMemberById(Id id) throws MemberNotFoundException {
 
     /**
      * Returns true if the list contains an equivalent member as the given argument.
+     *
+     * @param toCheck
+     * @return boolean
      */
     public boolean contains(Member toCheck) {
         requireNonNull(toCheck);
@@ -54,6 +58,10 @@ public boolean contains(Member toCheck) {
     /**
      * Returns true if the filtered list contains an equivalent member as the given argument.
      * {@code predicate} is the filter condition for the filtered list.
+     *
+     * @param toCheck
+     * @param predicate
+     * @return boolean
      */
     public boolean contains(Member toCheck, Predicate<Member> predicate) {
         requireNonNull(toCheck);
@@ -63,6 +71,8 @@ public boolean contains(Member toCheck, Predicate<Member> predicate) {
     /**
      * Adds a member to the list.
      * The member must not already exist in the list.
+     *
+     * @param toAdd
      */
     public void add(Member toAdd) {
         requireNonNull(toAdd);
@@ -76,6 +86,9 @@ public void add(Member toAdd) {
      * Replaces the member {@code target} in the list with {@code editedMember}.
      * {@code target} must exist in the list.
      * The member identity of {@code editedMember} must not be the same as another existing member in the list.
+     *
+     * @param target
+     * @param editedMember
      */
     public void setMember(Member target, Member editedMember) {
         requireAllNonNull(target, editedMember);
@@ -95,6 +108,8 @@ public void setMember(Member target, Member editedMember) {
     /**
      * Removes the equivalent member from the list.
      * The member must exist in the list.
+     *
+     * @param toRemove
      */
     public void remove(Member toRemove) {
         requireNonNull(toRemove);
@@ -103,6 +118,11 @@ public void remove(Member toRemove) {
         }
     }
 
+    /**
+     * Sets Members by input {@code UniqueMemberList }
+     *
+     * @param replacement
+     */
     public void setMembers(UniqueMemberList replacement) {
         requireNonNull(replacement);
         internalList.setAll(replacement.internalList);
@@ -111,6 +131,8 @@ public void setMembers(UniqueMemberList replacement) {
     /**
      * Replaces the contents of this list with {@code members}.
      * {@code members} must not contain duplicate members.
+     *
+     * @param members
      */
     public void setMembers(List<Member> members) {
         requireAllNonNull(members);
@@ -123,16 +145,28 @@ public void setMembers(List<Member> members) {
 
     /**
      * Returns the backing list as an unmodifiable {@code ObservableList}.
+     *
+     * @return ObservableList<Member>
      */
     public ObservableList<Member> asUnmodifiableObservableList() {
         return internalUnmodifiableList;
     }
 
+    /**
+     * Overrides Iterator method.
+     *
+     * @return Iterator
+     */
     @Override
     public Iterator<Member> iterator() {
         return internalList.iterator();
     }
 
+    /**
+     * Overrides equals method.
+     *
+     * @return boolean
+     */
     @Override
     public boolean equals(Object other) {
         return other == this // short circuit if same object
@@ -140,6 +174,11 @@ public boolean equals(Object other) {
                         && internalList.equals(((UniqueMemberList) other).internalList));
     }
 
+    /**
+     * Overrides hashCode method.
+     *
+     * @return int
+     */
     @Override
     public int hashCode() {
         return internalList.hashCode();
@@ -147,6 +186,9 @@ public int hashCode() {
 
     /**
      * Returns true if {@code members} contains only unique members.
+     *
+     * @param members
+     * @return boolean
      */
     private boolean membersAreUnique(List<Member> members) {
         for (int i = 0; i < members.size() - 1; i++) {
diff --git a/src/main/java/seedu/address/model/member/exceptions/DuplicateMemberException.java b/src/main/java/seedu/address/model/member/exceptions/DuplicateMemberException.java
index 45d03f64358..50985b5e1c0 100644
--- a/src/main/java/seedu/address/model/member/exceptions/DuplicateMemberException.java
+++ b/src/main/java/seedu/address/model/member/exceptions/DuplicateMemberException.java
@@ -5,6 +5,9 @@
  * identity).
  */
 public class DuplicateMemberException extends RuntimeException {
+    /**
+     * Constructs a {@code DuplicateMemberException} without input.
+     */
     public DuplicateMemberException() {
         super("Operation would result in duplicate members");
     }
diff --git a/src/main/java/seedu/address/model/reservation/DateTime.java b/src/main/java/seedu/address/model/reservation/DateTime.java
index 1ca2d247fab..dea58c8471c 100644
--- a/src/main/java/seedu/address/model/reservation/DateTime.java
+++ b/src/main/java/seedu/address/model/reservation/DateTime.java
@@ -7,17 +7,20 @@
 
 import seedu.address.commons.util.DateTimeUtil;
 
-
-
 /**
  * Represents a Reservation's dateTime in the ezFoodie.
  * Guarantees: immutable; is valid as declared in {@link #isValidDateTime(String)}
  */
 public class DateTime {
 
+    /**
+     * Stands for message constraints of reservation date time.
+     */
     public static final String MESSAGE_CONSTRAINTS =
             "Reservations should be valid date time " + DateTimeUtil.DATE_TIME_PATTERN;
-
+    /**
+     * Stands for reservation value.
+     */
     public final String value;
 
     /**
@@ -34,6 +37,12 @@ public DateTime(String dateTime) {
     /**
      * Returns true if a given string is a valid date time.
      */
+    /**
+     * Returns true if a given string is a valid date time.
+     *
+     * @param test
+     * @return boolean
+     */
     public static boolean isValidDateTime(String test) {
         try {
             DateTimeUtil.parseDateTime(test);
@@ -43,11 +52,21 @@ public static boolean isValidDateTime(String test) {
         }
     }
 
+    /**
+     * Overrides toString method.
+     *
+     * @return String
+     */
     @Override
     public String toString() {
         return value;
     }
 
+    /**
+     * Overrides equals method.
+     *
+     * @return boolean
+     */
     @Override
     public boolean equals(Object other) {
         return other == this // short circuit if same object
@@ -55,6 +74,11 @@ public boolean equals(Object other) {
                 && value.equals(((DateTime) other).value)); // state check
     }
 
+    /**
+     * Overrides hashCode method.
+     *
+     * @return int
+     */
     @Override
     public int hashCode() {
         return value.hashCode();
diff --git a/src/main/java/seedu/address/model/reservation/Id.java b/src/main/java/seedu/address/model/reservation/Id.java
index fd93568e1e4..ffb79f7d671 100644
--- a/src/main/java/seedu/address/model/reservation/Id.java
+++ b/src/main/java/seedu/address/model/reservation/Id.java
@@ -9,12 +9,30 @@
  */
 public class Id {
 
+    /**
+     * Stands for message constraints of reservation member id.
+     */
     public static final String MESSAGE_CONSTRAINTS =
             "Reservation IDs should only contain 6 digits, and it should not be blank";
+
+    /**
+     * Stands for validation regex of reservation id.
+     */
     public static final String VALIDATION_REGEX = "[\\p{Digit}]*";
+
+    /**
+     * Stands for reservation Id pattern
+     */
     public static final String PATTERN = "%06d";
+
+    /**
+     * Stands for reservation id max length
+     */
     public static final int LENGTH = 6;
 
+    /**
+     * Stands for reservation id value
+     */
     public final String value;
 
     /**
@@ -30,16 +48,29 @@ public Id(String id) {
 
     /**
      * Returns true if a given string is a valid id.
+     *
+     * @param test
+     * @return
      */
     public static boolean isValidId(String test) {
         return test.matches(VALIDATION_REGEX) && test.length() == LENGTH;
     }
 
+    /**
+     * Overrides toString method.
+     *
+     * @return String
+     */
     @Override
     public String toString() {
         return value;
     }
 
+    /**
+     * Overrides equals method.
+     *
+     * @return boolean
+     */
     @Override
     public boolean equals(Object other) {
         return other == this // short circuit if same object
@@ -47,6 +78,11 @@ public boolean equals(Object other) {
                 && value.equals(((Id) other).value)); // state check
     }
 
+    /**
+     * Overrides hashCode method.
+     *
+     * @return int
+     */
     @Override
     public int hashCode() {
         return value.hashCode();

From 01096b057a73c71900595b250370a6239ac8cea3 Mon Sep 17 00:00:00 2001
From: Zhang Zhiyao <zzy1007102679@gmail.com>
Date: Thu, 4 Nov 2021 21:37:49 +0800
Subject: [PATCH 3/5] java doc update

---
 .../java/seedu/address/AppParameters.java     |   6 +
 src/main/java/seedu/address/Main.java         |   3 +
 .../java/seedu/address/model/Account.java     |   9 +-
 .../java/seedu/address/model/EzFoodie.java    |  21 ++-
 src/main/java/seedu/address/model/Model.java  |  30 ++--
 .../seedu/address/model/ModelManager.java     | 134 +++++++++++++++++-
 .../java/seedu/address/model/Timestamp.java   |  28 +++-
 .../java/seedu/address/model/UserPrefs.java   |  37 ++++-
 .../seedu/address/model/member/Credit.java    |  17 +--
 .../address/model/reservation/DateTime.java   |  17 +--
 .../seedu/address/model/reservation/Id.java   |  20 ++-
 .../address/model/reservation/Remark.java     |  29 +++-
 .../model/reservation/Reservation.java        |  31 +++-
 .../java/seedu/address/model/tag/Tag.java     |   7 +
 .../address/model/transaction/Billing.java    |  32 ++++-
 .../seedu/address/model/transaction/Id.java   |  34 ++++-
 .../model/transaction/Transaction.java        |  35 ++++-
 .../address/model/util/SampleDataUtil.java    |   6 +
 .../seedu/address/storage/AccountStorage.java |   4 +-
 .../address/storage/EzFoodieStorage.java      |   4 +-
 .../address/storage/JsonAccountStorage.java   |  23 ++-
 .../storage/JsonAdaptedReservation.java       |   2 +-
 .../seedu/address/storage/JsonAdaptedTag.java |   2 +-
 .../storage/JsonAdaptedTransaction.java       |   2 +-
 .../address/storage/JsonEzFoodieStorage.java  |  21 +++
 .../storage/JsonSerializableEzFoodie.java     |   4 +-
 .../address/storage/JsonUserPrefsStorage.java |  20 +++
 .../java/seedu/address/storage/Storage.java   |  42 ++++++
 .../seedu/address/storage/StorageManager.java |  62 +++++++-
 .../address/storage/UserPrefsStorage.java     |   4 +-
 .../java/seedu/address/ui/CommandBox.java     |   7 +-
 .../java/seedu/address/ui/HelpWindow.java     |  13 +-
 .../java/seedu/address/ui/MainWindow.java     |   7 +-
 .../java/seedu/address/ui/MemberCard.java     |   6 +-
 .../seedu/address/ui/MemberListPanel.java     |   2 +-
 .../seedu/address/ui/MemberViewWindow.java    |   3 +
 .../java/seedu/address/ui/ResultDisplay.java  |   5 +
 .../java/seedu/address/ui/SummaryWindow.java  |   5 +-
 src/main/java/seedu/address/ui/UiManager.java |   7 +-
 39 files changed, 650 insertions(+), 91 deletions(-)

diff --git a/src/main/java/seedu/address/AppParameters.java b/src/main/java/seedu/address/AppParameters.java
index a7f6c5fa181..773bc406c8c 100644
--- a/src/main/java/seedu/address/AppParameters.java
+++ b/src/main/java/seedu/address/AppParameters.java
@@ -59,6 +59,9 @@ public static AppParameters parse(Application.Parameters parameters) {
         return appParameters;
     }
 
+    /**
+     * Overrides equals method.
+     */
     @Override
     public boolean equals(Object other) {
         if (other == this) {
@@ -74,6 +77,9 @@ public boolean equals(Object other) {
                 && Objects.equals(getAccountPath(), otherAppParameters.getAccountPath());
     }
 
+    /**
+     * Overrides hashCode.
+     */
     @Override
     public int hashCode() {
         return Objects.hash(configPath, accountPath);
diff --git a/src/main/java/seedu/address/Main.java b/src/main/java/seedu/address/Main.java
index 052a5068631..4c05610a5d0 100644
--- a/src/main/java/seedu/address/Main.java
+++ b/src/main/java/seedu/address/Main.java
@@ -19,6 +19,9 @@
  * to be the entry point of the application, we avoid this issue.
  */
 public class Main {
+    /**
+     * Starts main application.
+     */
     public static void main(String[] args) {
         Application.launch(MainApp.class, args);
     }
diff --git a/src/main/java/seedu/address/model/Account.java b/src/main/java/seedu/address/model/Account.java
index 61bdece76fd..f1078176a93 100644
--- a/src/main/java/seedu/address/model/Account.java
+++ b/src/main/java/seedu/address/model/Account.java
@@ -88,12 +88,19 @@ public boolean equals(Object other) {
         return otherAccount.getPassword().equals(getPassword());
     }
 
+    /**
+     * Overrides the hashcode method.
+     * Use this method for custom fields hashing instead of implementing your own
+     */
     @Override
     public int hashCode() {
-        // use this method for custom fields hashing instead of implementing your own
         return Objects.hash(password);
     }
 
+    /**
+     * Overrides toString method.
+     * @return String with password value.
+     */
     @Override
     public String toString() {
         final StringBuilder builder = new StringBuilder();
diff --git a/src/main/java/seedu/address/model/EzFoodie.java b/src/main/java/seedu/address/model/EzFoodie.java
index c0e60246971..75ee5ca373a 100644
--- a/src/main/java/seedu/address/model/EzFoodie.java
+++ b/src/main/java/seedu/address/model/EzFoodie.java
@@ -28,10 +28,15 @@ public class EzFoodie implements ReadOnlyEzFoodie {
         members = new UniqueMemberList();
     }
 
+    /**
+     * Constructs {@code EzFoodie} without input value.
+     */
     public EzFoodie() {}
 
     /**
-     * Creates an ezFoodie using the Members in the {@code toBeCopied}
+     * Constructs an {@code ezFoodie} using the Members in the {@code toBeCopied}
+     *
+     * @param toBeCopied the data is going to creates ezFoodie.
      */
     public EzFoodie(ReadOnlyEzFoodie toBeCopied) {
         this();
@@ -104,17 +109,28 @@ public void removeMember(Member key) {
 
     //// util methods
 
+    /**
+     * Overrides toString method
+     */
     @Override
     public String toString() {
         return members.asUnmodifiableObservableList().size() + " members";
         // TODO: refine later
     }
 
+    /**
+     * Overrides and gets member list.
+     *
+     * @return ObservableList<Member> a series list data of members.
+     */
     @Override
     public ObservableList<Member> getMemberList() {
         return members.asUnmodifiableObservableList();
     }
 
+    /**
+     * Overrides equals method.
+     */
     @Override
     public boolean equals(Object other) {
         return other == this // short circuit if same object
@@ -122,6 +138,9 @@ public boolean equals(Object other) {
                 && members.equals(((EzFoodie) other).members));
     }
 
+    /**
+     * Overrides hashCode method.
+     */
     @Override
     public int hashCode() {
         return members.hashCode();
diff --git a/src/main/java/seedu/address/model/Model.java b/src/main/java/seedu/address/model/Model.java
index 09e68f87f00..592dd26439e 100644
--- a/src/main/java/seedu/address/model/Model.java
+++ b/src/main/java/seedu/address/model/Model.java
@@ -142,61 +142,71 @@ public interface Model {
     void updateSortedMemberList(Comparator<Member> comparator);
 
     /**
-     * Gets the number of all members in ezFoodie
+     * Gets the number of all members in ezFoodie.
+     *
      * @return total count
      */
     int getNumberOfMembers();
 
     /**
-     * Gets the number of members in each tier in ezFoodie
+     * Gets the number of members in each tier in ezFoodie.
+     *
      * @return hashmap of (tier name, count) pairs.
      */
     HashMap<String, Integer> getNumberOfMembersByTiers();
 
     /**
-     * Gets the number of transactions made in all time in ezFoodie
+     * Gets the number of transactions made in all time in ezFoodie.
+     *
      * @return total count all time
      */
     int getNumberOfTransactions();
 
     /**
-     * Gets the number of transactions made in the past month in ezFoodie
+     * Gets the number of transactions made in the past month in ezFoodie.
+     *
      * @return total count in last 1 month
      */
     int getNumberOfTransactionsPastMonth();
 
     /**
-     * Gets the number of transactions made in the past 3 months in ezFoodie
+     * Gets the number of transactions made in the past 3 months in ezFoodie.
+     *
      * @return total count in last 3 months
      */
     int getNumberOfTransactionsPastThreeMonth();
 
     /**
-     * Gets the number of transactions made in the past 6 months in ezFoodie
+     * Gets the number of transactions made in the past 6 months in ezFoodie.
+     *
      * @return total count in last 6 months
      */
     int getNumberOfTransactionsPastSixMonth();
 
     /**
-     * Gets the total amount of transactions made all time in ezFoodie
+     * Gets the total amount of transactions made all time in ezFoodie.
+     *
      * @return total amount all time
      */
     double getTotalAmountOfTransactions();
 
     /**
-     * Gets the total amount of transactions made in the past month in ezFoodie
+     * Gets the total amount of transactions made in the past month in ezFoodie.
+     *
      * @return total amount in past 1 month
      */
     double getTotalAmountOfTransactionsPastMonth();
 
     /**
-     * Gets the total amount of transactions made in the past 3 months in ezFoodie
+     * Gets the total amount of transactions made in the past 3 months in ezFoodie.
+     *
      * @return total amount in past 3 months
      */
     double getTotalAmountOfTransactionsPastThreeMonth();
 
     /**
-     * Gets the total amount of transactions made in the past 6 months in ezFoodie
+     * Gets the total amount of transactions made in the past 6 months in ezFoodie.
+     *
      * @return total amount in past 6 months
      */
     double getTotalAmountOfTransactionsPastSixMonth();
diff --git a/src/main/java/seedu/address/model/ModelManager.java b/src/main/java/seedu/address/model/ModelManager.java
index dd2d30eaada..a3ca389b87b 100644
--- a/src/main/java/seedu/address/model/ModelManager.java
+++ b/src/main/java/seedu/address/model/ModelManager.java
@@ -34,6 +34,8 @@ public class ModelManager implements Model {
 
     /**
      * Initializes a ModelManager with the given account, ezFoodie and userPrefs.
+     * Constructs a {@code ModelManager} with input variables {@code ReadOnlyAccount},
+     * {@code ReadOnlyEzFoodie} and {@code ReadOnlyUserPrefs}.
      */
     public ModelManager(ReadOnlyAccount account, ReadOnlyEzFoodie ezFoodie, ReadOnlyUserPrefs userPrefs) {
         super();
@@ -50,50 +52,77 @@ public ModelManager(ReadOnlyAccount account, ReadOnlyEzFoodie ezFoodie, ReadOnly
         sortedMembers = new SortedList<>(filteredMembers); // Wrap the FilteredList in a SortedList
     }
 
+    /**
+     *  Constructs a {@code ModelManager} without any input.
+     */
     public ModelManager() {
         this(new Account(), new EzFoodie(), new UserPrefs());
     }
 
     //=========== UserPrefs ==================================================================================
 
+    /**
+     * Replaces user prefs data with the data in {@code userPrefs}.
+     */
     @Override
     public void setUserPrefs(ReadOnlyUserPrefs userPrefs) {
         requireNonNull(userPrefs);
         this.userPrefs.resetData(userPrefs);
     }
 
+    /**
+     * Returns the user prefs.
+     */
     @Override
     public ReadOnlyUserPrefs getUserPrefs() {
         return userPrefs;
     }
 
+    /**
+     * Returns the user prefs' GUI settings.
+     */
     @Override
     public GuiSettings getGuiSettings() {
         return userPrefs.getGuiSettings();
     }
 
+    /**
+     * Sets the user prefs' GUI settings.
+     */
     @Override
     public void setGuiSettings(GuiSettings guiSettings) {
         requireNonNull(guiSettings);
         userPrefs.setGuiSettings(guiSettings);
     }
 
+    /**
+     * Returns the user prefs' account path.
+     */
     @Override
     public Path getAccountFilePath() {
         return userPrefs.getAccountFilePath();
     }
 
+    /**
+     * Sets the user prefs' account path.
+     */
     @Override
     public void setAccountFilePath(Path accountFilePath) {
         requireNonNull(accountFilePath);
         userPrefs.setAccountFilePath(accountFilePath);
     }
 
+    /**
+     * Returns the user prefs' ezFoodie file path.
+     */
     @Override
     public Path getEzFoodieFilePath() {
         return userPrefs.getEzFoodieFilePath();
     }
 
+    /**
+     * Sets the user prefs' ezFoodie file path.
+     */
     @Override
     public void setEzFoodieFilePath(Path ezFoodieFilePath) {
         requireNonNull(ezFoodieFilePath);
@@ -102,12 +131,18 @@ public void setEzFoodieFilePath(Path ezFoodieFilePath) {
 
     //=========== Account ====================================================================================
 
+    /**
+     * Replaces account with the data in {@code account}.
+     */
     @Override
     public void setAccount(ReadOnlyAccount account) {
         requireNonNull(account);
         this.account.resetData(account);
     }
 
+    /**
+     * Returns the Account.
+     */
     @Override
     public ReadOnlyAccount getAccount() {
         return account;
@@ -115,39 +150,65 @@ public ReadOnlyAccount getAccount() {
 
     //=========== EzFoodie ===================================================================================
 
+    /**
+     * Replaces ezFoodie data with the data in {@code ezFoodie}.
+     */
     @Override
     public void setEzFoodie(ReadOnlyEzFoodie ezFoodie) {
         this.ezFoodie.resetData(ezFoodie);
     }
 
+    /**
+     * Returns the EzFoodie.
+     */
     @Override
     public ReadOnlyEzFoodie getEzFoodie() {
         return ezFoodie;
     }
 
+    /**
+     * Returns true if a member with the same identity as {@code member} exists in the ezFoodie.
+     */
     @Override
     public boolean hasMember(Member member) {
         requireNonNull(member);
         return ezFoodie.hasMember(member);
     }
 
+    /**
+     * Returns true if a member with the same identity as {@code member} exists in the filtered ezFoodie.
+     * {@code predicate} is the filter condition for the filtered ezFoodie.
+     */
     @Override
     public boolean hasMember(Member member, Predicate<Member> predicate) {
         requireNonNull(member);
         return ezFoodie.hasMember(member, predicate);
     }
 
+    /**
+     * Deletes the given member.
+     * The member must exist in the ezFoodie.
+     */
     @Override
     public void deleteMember(Member target) {
         ezFoodie.removeMember(target);
     }
 
+    /**
+     * Adds the given member.
+     * {@code member} must not already exist in the ezFoodie.
+     */
     @Override
     public void addMember(Member member) {
         ezFoodie.addMember(member);
         updateFilteredMemberList(PREDICATE_SHOW_ALL_MEMBERS);
     }
 
+    /**
+     * Replaces the given member {@code target} with {@code editedMember}.
+     * {@code target} must exist in the ezFoodie.
+     * The member identity of {@code editedMember} must not be the same as another existing member in the ezFoodie.
+     */
     @Override
     public void setMember(Member target, Member editedMember) {
         requireAllNonNull(target, editedMember);
@@ -160,7 +221,7 @@ public void setMember(Member target, Member editedMember) {
 
     /**
      * Returns an unmodifiable view of the list of {@code Member} backed by the internal list of
-     * {@code versionedEzFoodie}
+     * {@code versionedEzFoodie}.
      */
     @Override
     public ObservableList<Member> getUpdatedMemberList() {
@@ -169,8 +230,7 @@ public ObservableList<Member> getUpdatedMemberList() {
 
     /**
      * Returns an unmodifiable view of the list of {@code Member} backed by the internal list of
-     * {@code versionedEzFoodie}
-     * for viewCommand to use only
+     * {@code versionedEzFoodie} for viewCommand to use only.
      */
     @Override
     public ObservableList<Member> getUpdatedMemberListForView() {
@@ -179,11 +239,21 @@ public ObservableList<Member> getUpdatedMemberListForView() {
 
     //=========== Summary display =============================================================
 
+    /**
+     * Gets the number of all members in ezFoodie.
+     *
+     * @return total count.
+     */
     @Override
     public int getNumberOfMembers() {
         return ezFoodie.getMemberList().size();
     }
 
+    /**
+     * Gets the number of members in each tier in ezFoodie.
+     *
+     * @return hashmap of (tier name, count) pairs.
+     */
     @Override
     public HashMap<String, Integer> getNumberOfMembersByTiers() {
         HashMap<String, Integer> tierCounts = new HashMap<>();
@@ -203,6 +273,11 @@ public HashMap<String, Integer> getNumberOfMembersByTiers() {
         return tierCounts;
     }
 
+    /**
+     * Gets the number of transactions made in all time in ezFoodie.
+     *
+     * @return total count all time.
+     */
     @Override
     public int getNumberOfTransactions() {
         int count = 0;
@@ -214,24 +289,44 @@ public int getNumberOfTransactions() {
         return count;
     }
 
+    /**
+     * Gets the number of transactions made in the past month in ezFoodie.
+     *
+     * @return total count in last 1 month.
+     */
     @Override
     public int getNumberOfTransactionsPastMonth() {
         // todo
         return (int) Math.random() + 32;
     }
 
+    /**
+     * Gets the number of transactions made in the past 3 months in ezFoodie.
+     *
+     * @return total count in last 3 months.
+     */
     @Override
     public int getNumberOfTransactionsPastThreeMonth() {
         // todo
         return (int) Math.random() + 77;
     }
 
+    /**
+     * Gets the number of transactions made in the past 6 months in ezFoodie.
+     *
+     * @return total count in last 6 months.
+     */
     @Override
     public int getNumberOfTransactionsPastSixMonth() {
         // todo
         return (int) Math.random() + 100;
     }
 
+    /**
+     * Gets the total amount of transactions made all time in ezFoodie.
+     *
+     * @return total amount all time.
+     */
     @Override
     public double getTotalAmountOfTransactions() {
         double count = 0;
@@ -245,18 +340,33 @@ public double getTotalAmountOfTransactions() {
         return count;
     }
 
+    /**
+     * Gets the total amount of transactions made in the past month in ezFoodie.
+     *
+     * @return total amount in past 1 month.
+     */
     @Override
     public double getTotalAmountOfTransactionsPastMonth() {
         // todo
         return Math.random() + 2000;
     }
 
+    /**
+     * Gets the total amount of transactions made in the past 3 months in ezFoodie.
+     *
+     * @return total amount in past 3 months.
+     */
     @Override
     public double getTotalAmountOfTransactionsPastThreeMonth() {
         // todo
         return Math.random() + 3000;
     }
 
+    /**
+     * Gets the total amount of transactions made in the past 6 months in ezFoodie.
+     *
+     * @return total amount in past 6 months.
+     */
     @Override
     public double getTotalAmountOfTransactionsPastSixMonth() {
         // todo
@@ -265,12 +375,22 @@ public double getTotalAmountOfTransactionsPastSixMonth() {
 
     //=========== Filtered Member List Accessors =============================================================
 
+    /**
+     * Updates the filter of the filtered member list to filter by the given {@code predicate}.
+     *
+     * @throws NullPointerException if {@code predicate} is null.
+     */
     @Override
     public void updateFilteredMemberList(Predicate<Member> predicate) {
         requireNonNull(predicate);
         filteredMembers.setPredicate(predicate);
     }
 
+    /**
+     * Updates the filter of the filtered member list to filter by the given {@code predicate}.
+     *
+     * @throws NullPointerException if {@code predicate} is null.
+     */
     @Override
     public void updateFilteredMemberListForView(Predicate<Member> predicate) {
         requireNonNull(predicate);
@@ -279,12 +399,20 @@ public void updateFilteredMemberListForView(Predicate<Member> predicate) {
 
     //=========== Sorted Member List Accessors ===============================================================
 
+    /**
+     * Updates the sort of the sorted member list to sort by the given {@code comparator}.
+     *
+     * @throws NullPointerException if {@code comparator} is null.
+     */
     @Override
     public void updateSortedMemberList(Comparator<Member> comparator) {
         requireNonNull(comparator);
         sortedMembers.setComparator(comparator);
     }
 
+    /**
+     * Override equals method.
+     */
     @Override
     public boolean equals(Object obj) {
         // short circuit if same object
diff --git a/src/main/java/seedu/address/model/Timestamp.java b/src/main/java/seedu/address/model/Timestamp.java
index 998ba094e2a..23f2e74c5e6 100644
--- a/src/main/java/seedu/address/model/Timestamp.java
+++ b/src/main/java/seedu/address/model/Timestamp.java
@@ -9,14 +9,24 @@
  */
 public class Timestamp {
 
+    /**
+     * Stands for timestamp message constraints.
+     */
     public static final String MESSAGE_CONSTRAINTS =
             "Timestamps should only contain digits and can be parsed to long, and it should not be blank";
+
+    /**
+     * Stands for validation regex of timestamp.
+     */
     public static final String VALIDATION_REGEX = "[\\p{Digit}]*";
 
+    /**
+     * Stands for the timestamp value.
+     */
     public final String value;
 
     /**
-     * Constructs a {@code Timestamp}.
+     * Constructs a {@code Timestamp} with input {@code timestamp}.
      */
     public Timestamp(String timestamp) {
         requireNonNull(timestamp);
@@ -25,7 +35,10 @@ public Timestamp(String timestamp) {
     }
 
     /**
-     * Returns true if a given string is a valid timestamp.
+     * Returns whether is valid timestamp.
+     *
+     * @param test input string test.
+     * @return boolean true if a given string is a valid timestamp.
      */
     public static boolean isValidTimestamp(String test) {
         try {
@@ -36,11 +49,19 @@ public static boolean isValidTimestamp(String test) {
         }
     }
 
+    /**
+     * Overrides toString method.
+     *
+     * @return String of the timestamp value
+     */
     @Override
     public String toString() {
         return value;
     }
 
+    /**
+     * Overrides equals method.
+     */
     @Override
     public boolean equals(Object other) {
         return other == this // short circuit if same object
@@ -48,6 +69,9 @@ public boolean equals(Object other) {
                 && value.equals(((Timestamp) other).value)); // state check
     }
 
+    /**
+     * Overrides hashCode method.
+     */
     @Override
     public int hashCode() {
         return value.hashCode();
diff --git a/src/main/java/seedu/address/model/UserPrefs.java b/src/main/java/seedu/address/model/UserPrefs.java
index bb24ff67afe..22015e05bb8 100644
--- a/src/main/java/seedu/address/model/UserPrefs.java
+++ b/src/main/java/seedu/address/model/UserPrefs.java
@@ -18,12 +18,12 @@ public class UserPrefs implements ReadOnlyUserPrefs {
     private Path ezFoodieFilePath = Paths.get("data" , "ezfoodie.json");
 
     /**
-     * Creates a {@code UserPrefs} with default values.
+     * Constructs a {@code UserPrefs} with default values.
      */
     public UserPrefs() {}
 
     /**
-     * Creates a {@code UserPrefs} with the prefs in {@code userPrefs}.
+     * Constructs a {@code UserPrefs} with the prefs in {@code userPrefs}.
      */
     public UserPrefs(ReadOnlyUserPrefs userPrefs) {
         this();
@@ -39,33 +39,58 @@ public void resetData(ReadOnlyUserPrefs newUserPrefs) {
         setEzFoodieFilePath(newUserPrefs.getEzFoodieFilePath());
     }
 
+    /**
+     * Gets Gui Settings.
+     */
     public GuiSettings getGuiSettings() {
         return guiSettings;
     }
 
+    /**
+     * Sets the Gui Settings by this input {@code guiSettings}.
+     */
     public void setGuiSettings(GuiSettings guiSettings) {
         requireNonNull(guiSettings);
         this.guiSettings = guiSettings;
     }
 
+    /**
+     * Gets account file path.
+     *
+     * @return Path of account file.
+     */
     public Path getAccountFilePath() {
         return accountFilePath;
     }
 
+    /**
+     * Sets the account file path by this input {@code accountFilePath}.
+     */
     public void setAccountFilePath(Path accountFilePath) {
         requireNonNull(accountFilePath);
         this.accountFilePath = accountFilePath;
     }
 
+    /**
+     * Gets EzFoodie file path.
+     *
+     * @return Path of EzFoodie file.
+     */
     public Path getEzFoodieFilePath() {
         return ezFoodieFilePath;
     }
 
+    /**
+     * Sets the EzFoodie file path by this input {@code ezFoodieFilePath}.
+     */
     public void setEzFoodieFilePath(Path ezFoodieFilePath) {
         requireNonNull(ezFoodieFilePath);
         this.ezFoodieFilePath = ezFoodieFilePath;
     }
 
+    /**
+     * Overrides equals method.
+     */
     @Override
     public boolean equals(Object other) {
         if (other == this) {
@@ -82,11 +107,19 @@ public boolean equals(Object other) {
                 && ezFoodieFilePath.equals(o.ezFoodieFilePath);
     }
 
+    /**
+     * Overrides hashCode method.
+     */
     @Override
     public int hashCode() {
         return Objects.hash(guiSettings, accountFilePath, ezFoodieFilePath);
     }
 
+    /**
+     * Overrides toString method.
+     *
+     * @return String with gui Setting and file path and location.
+     */
     @Override
     public String toString() {
         StringBuilder sb = new StringBuilder();
diff --git a/src/main/java/seedu/address/model/member/Credit.java b/src/main/java/seedu/address/model/member/Credit.java
index 0b9eedece8b..932ad000cd9 100644
--- a/src/main/java/seedu/address/model/member/Credit.java
+++ b/src/main/java/seedu/address/model/member/Credit.java
@@ -47,13 +47,10 @@ public Credit(String credit) {
     }
 
     /**
-     * Returns true if a given string is a valid credit.
-     */
-    /**
-     * Returns true if a given string is a valid credit.
+     * Returns whether is a valid credit.
      *
-     * @param test
-     * @return boolean
+     * @param test input String test
+     * @return boolean true if a given string is a valid credit.
      */
     public static boolean isValidCredit(String test) {
         return test.matches(VALIDATION_REGEX) && test.length() <= LENGTH;
@@ -68,6 +65,8 @@ public int getIntValue() {
 
     /**
      * Gets String value of credit for Point use.
+     *
+     * @return String of credit value.
      */
     public String getStringValue() {
         return value;
@@ -75,8 +74,6 @@ public String getStringValue() {
 
     /**
      * Overrides toString method.
-     *
-     * @return String
      */
     @Override
     public String toString() {
@@ -85,8 +82,6 @@ public String toString() {
 
     /**
      * Overrides equals method.
-     *
-     * @return boolean
      */
     @Override
     public boolean equals(Object other) {
@@ -97,8 +92,6 @@ public boolean equals(Object other) {
 
     /**
      * Overrides hashCode method.
-     *
-     * @return int
      */
     @Override
     public int hashCode() {
diff --git a/src/main/java/seedu/address/model/reservation/DateTime.java b/src/main/java/seedu/address/model/reservation/DateTime.java
index dea58c8471c..b9265bfe42e 100644
--- a/src/main/java/seedu/address/model/reservation/DateTime.java
+++ b/src/main/java/seedu/address/model/reservation/DateTime.java
@@ -26,7 +26,7 @@ public class DateTime {
     /**
      * Constructs a {@code Reservation}.
      *
-     * @param dateTime A valid date time.
+     * @param dateTime a valid date time.
      */
     public DateTime(String dateTime) {
         requireNonNull(dateTime);
@@ -35,13 +35,10 @@ public DateTime(String dateTime) {
     }
 
     /**
-     * Returns true if a given string is a valid date time.
-     */
-    /**
-     * Returns true if a given string is a valid date time.
+     * Returns whether is valid date time
      *
-     * @param test
-     * @return boolean
+     * @param test input string test
+     * @return boolean true if a given string is a valid date time.
      */
     public static boolean isValidDateTime(String test) {
         try {
@@ -54,8 +51,6 @@ public static boolean isValidDateTime(String test) {
 
     /**
      * Overrides toString method.
-     *
-     * @return String
      */
     @Override
     public String toString() {
@@ -64,8 +59,6 @@ public String toString() {
 
     /**
      * Overrides equals method.
-     *
-     * @return boolean
      */
     @Override
     public boolean equals(Object other) {
@@ -76,8 +69,6 @@ public boolean equals(Object other) {
 
     /**
      * Overrides hashCode method.
-     *
-     * @return int
      */
     @Override
     public int hashCode() {
diff --git a/src/main/java/seedu/address/model/reservation/Id.java b/src/main/java/seedu/address/model/reservation/Id.java
index ffb79f7d671..dff028d3d36 100644
--- a/src/main/java/seedu/address/model/reservation/Id.java
+++ b/src/main/java/seedu/address/model/reservation/Id.java
@@ -5,7 +5,7 @@
 
 /**
  * Represents a Reservation's id in the ezFoodie.
- * Guarantees: ummutable, is valid as declared in {@link #isValidId(String)}
+ * Guarantees: immutable, is valid as declared in {@link #isValidId(String)}
  */
 public class Id {
 
@@ -21,7 +21,7 @@ public class Id {
     public static final String VALIDATION_REGEX = "[\\p{Digit}]*";
 
     /**
-     * Stands for reservation Id pattern
+     * Stands for reservation Id pattern.
      */
     public static final String PATTERN = "%06d";
 
@@ -31,14 +31,14 @@ public class Id {
     public static final int LENGTH = 6;
 
     /**
-     * Stands for reservation id value
+     * Stands for reservation id value.
      */
     public final String value;
 
     /**
      * Constructs a {@code Id}.
      *
-     * @param id A valid id.
+     * @param id a valid id.
      */
     public Id(String id) {
         requireNonNull(id);
@@ -47,10 +47,10 @@ public Id(String id) {
     }
 
     /**
-     * Returns true if a given string is a valid id.
+     * Returns whether is valid id.
      *
-     * @param test
-     * @return
+     * @param test input string test.
+     * @return boolean true if a given string is a valid id.
      */
     public static boolean isValidId(String test) {
         return test.matches(VALIDATION_REGEX) && test.length() == LENGTH;
@@ -59,7 +59,7 @@ public static boolean isValidId(String test) {
     /**
      * Overrides toString method.
      *
-     * @return String
+     * @return String print reservation id value.
      */
     @Override
     public String toString() {
@@ -68,8 +68,6 @@ public String toString() {
 
     /**
      * Overrides equals method.
-     *
-     * @return boolean
      */
     @Override
     public boolean equals(Object other) {
@@ -80,8 +78,6 @@ public boolean equals(Object other) {
 
     /**
      * Overrides hashCode method.
-     *
-     * @return int
      */
     @Override
     public int hashCode() {
diff --git a/src/main/java/seedu/address/model/reservation/Remark.java b/src/main/java/seedu/address/model/reservation/Remark.java
index 852fb446246..92c25f21c7e 100644
--- a/src/main/java/seedu/address/model/reservation/Remark.java
+++ b/src/main/java/seedu/address/model/reservation/Remark.java
@@ -11,18 +11,21 @@ public class Remark {
 
     public static final String MESSAGE_CONSTRAINTS = "Remarks can take any values, and it should not be blank";
 
-    /*
-     * The first character of the address must not be a whitespace,
+    /**
+     * Stands for the first character of the address must not be a whitespace,
      * otherwise " " (a blank string) becomes a valid input.
      */
     public static final String VALIDATION_REGEX = "[^\\s].*";
 
+    /**
+     * Stands for reservation remark value.
+     */
     public final String value;
 
     /**
      * Constructs a {@code Remark}.
      *
-     * @param remark A valid remark.
+     * @param remark a valid remark.
      */
     public Remark(String remark) {
         requireNonNull(remark);
@@ -31,24 +34,37 @@ public Remark(String remark) {
     }
 
     /**
-     * Returns true if a given string is a valid remark.
+     * Returns whether is valid remark.
+     *
+     * @param test the string input test.
+     * @return boolean true if a given string is a valid remark.
      */
     public static boolean isValidRemark(String test) {
         return test.matches(VALIDATION_REGEX);
     }
 
     /**
-     * Returns double value of remark.
+     * Gets double class from a string.
+     *
+     * @return double value of remark.
      */
     public double getDoubleValue() {
         return Double.parseDouble(value);
     }
 
+    /**
+     * Overrides the toString method.
+     *
+     * @return String reservation remark value。
+     */
     @Override
     public String toString() {
         return value;
     }
 
+    /**
+     * Overrides the equal method.
+     */
     @Override
     public boolean equals(Object other) {
         return other == this // short circuit if same object
@@ -56,6 +72,9 @@ public boolean equals(Object other) {
                 && value.equals(((Remark) other).value)); // state check
     }
 
+    /**
+     * Overrides the hashCode method.
+     */
     @Override
     public int hashCode() {
         return value.hashCode();
diff --git a/src/main/java/seedu/address/model/reservation/Reservation.java b/src/main/java/seedu/address/model/reservation/Reservation.java
index 767d79f9521..7a9b14d6cb4 100644
--- a/src/main/java/seedu/address/model/reservation/Reservation.java
+++ b/src/main/java/seedu/address/model/reservation/Reservation.java
@@ -18,7 +18,12 @@ public class Reservation {
     private final Remark remark;
 
     /**
-     * Every field must be present and not null.
+     * Constructs a {@code Reservation},
+     * and every field must be present and not null.
+     *
+     * @param id member Id
+     * @param dateTime Reservation date time
+     * @param remark reservation remark
      */
     public Reservation(Id id, DateTime dateTime, Remark remark) {
         requireAllNonNull(id, dateTime, remark);
@@ -27,14 +32,29 @@ public Reservation(Id id, DateTime dateTime, Remark remark) {
         this.remark = remark;
     }
 
+    /**
+     * Gets reservation id.
+     *
+     * @return id the reservation member id
+     */
     public Id getId() {
         return id;
     }
 
+    /**
+     * Gets reservation's date time.
+     *
+     * @return DateTime of reservation.
+     */
     public DateTime getDateTime() {
         return dateTime;
     }
 
+    /**
+     * Gets reservation's remark.
+     *
+     * @return Remark of reservation.
+     */
     public Remark getRemark() {
         return remark;
     }
@@ -59,12 +79,19 @@ public boolean equals(Object other) {
         return otherDate.isEqual(date);
     }
 
+    /**
+     * Overrides hashCode for custom fields hashing instead of implementing your own.
+     */
     @Override
     public int hashCode() {
-        // use this method for custom fields hashing instead of implementing your own
         return Objects.hash(dateTime, remark);
     }
 
+    /**
+     * Overrides toString method.
+     *
+     * @return String of reservation's information including Id, DateTime and remark.
+     */
     @Override
     public String toString() {
         final StringBuilder builder = new StringBuilder();
diff --git a/src/main/java/seedu/address/model/tag/Tag.java b/src/main/java/seedu/address/model/tag/Tag.java
index 0f66ea672f3..a2aa87d9d78 100644
--- a/src/main/java/seedu/address/model/tag/Tag.java
+++ b/src/main/java/seedu/address/model/tag/Tag.java
@@ -9,7 +9,14 @@
  */
 public class Tag {
 
+    /**
+     * Stands for tag message constraints.
+     */
     public static final String MESSAGE_CONSTRAINTS = "Tags names should be alphanumeric";
+
+    /**
+     * Stands for tag validation regex.
+     */
     public static final String VALIDATION_REGEX = "\\p{Alnum}+";
 
     public final String tagName;
diff --git a/src/main/java/seedu/address/model/transaction/Billing.java b/src/main/java/seedu/address/model/transaction/Billing.java
index 864c55bf918..7d130153ec5 100644
--- a/src/main/java/seedu/address/model/transaction/Billing.java
+++ b/src/main/java/seedu/address/model/transaction/Billing.java
@@ -9,17 +9,31 @@
  */
 public class Billing {
 
+    /**
+     * Stands for message constraints of transaction billing.
+     */
     public static final String MESSAGE_CONSTRAINTS =
             "Billings should be numeric with 2 decimal places";
+
+    /**
+     * Stands for validation regex of transaction billing.
+     */
     public static final String VALIDATION_REGEX = "\\d*\\.\\d{2}$";
+
+    /**
+     * Stands for transaction billing max amount length
+     */
     public static final int LENGTH = 7; // Max amount is 9999.99
 
+    /**
+     * Stands for transaction billing value.
+     */
     public final String value;
 
     /**
      * Constructs a {@code Billing}.
      *
-     * @param billing A valid billing amount.
+     * @param billing a valid billing amount.
      */
     public Billing(String billing) {
         requireNonNull(billing);
@@ -28,7 +42,10 @@ public Billing(String billing) {
     }
 
     /**
-     * Returns true if a given string is a valid billing amount.
+     * Returns whether is valid billing.
+     *
+     * @param test input string test.
+     * @return boolean true if a given string is a valid billing amount.
      */
     public static boolean isValidBilling(String test) {
         return test.matches(VALIDATION_REGEX) && test.length() <= LENGTH;
@@ -41,11 +58,19 @@ public double getDoubleValue() {
         return Double.parseDouble(value);
     }
 
+    /**
+     * Overrides toString method.
+     *
+     * @return transaction billing value.
+     */
     @Override
     public String toString() {
         return value;
     }
 
+    /**
+     * Overrides the equals method.
+     */
     @Override
     public boolean equals(Object other) {
         return other == this // short circuit if same object
@@ -53,6 +78,9 @@ public boolean equals(Object other) {
                 && value.equals(((Billing) other).value)); // state check
     }
 
+    /**
+     * Overrides the hashcode method.
+     */
     @Override
     public int hashCode() {
         return value.hashCode();
diff --git a/src/main/java/seedu/address/model/transaction/Id.java b/src/main/java/seedu/address/model/transaction/Id.java
index 4bc2a1813c0..ce7cbc8e0e4 100644
--- a/src/main/java/seedu/address/model/transaction/Id.java
+++ b/src/main/java/seedu/address/model/transaction/Id.java
@@ -9,18 +9,31 @@
  */
 public class Id {
 
+    /**
+     * Stands for message constraints of transaction Id.
+     */
     public static final String MESSAGE_CONSTRAINTS =
             "Transactions should only contain 6 digits, and it should not be blank";
+
+    /**
+     * Stands for validation regex of transaction Id.
+     */
     public static final String VALIDATION_REGEX = "[\\p{Digit}]*";
-    public static final String PATTERN = "%06d";
+
+    /**
+     * Stands for transaction Id max length
+     */
     public static final int LENGTH = 6;
 
+    /**
+     * Stands for transaction Id value.
+     */
     public final String value;
 
     /**
      * Constructs a {@code Id}.
      *
-     * @param id A valid id.
+     * @param id a valid id.
      */
     public Id(String id) {
         requireNonNull(id);
@@ -29,17 +42,29 @@ public Id(String id) {
     }
 
     /**
-     * Returns true if a given string is a valid id.
+     * Returns whether is valid id.
+     *
+     * @param test input string test
+     * @return boolean true if a given string is a valid id.
      */
+
     public static boolean isValidId(String test) {
         return test.matches(VALIDATION_REGEX) && test.length() == LENGTH;
     }
 
+    /**
+     * Overrides the toString method.
+     *
+     * @return transaction billing value.
+     */
     @Override
     public String toString() {
         return value;
     }
 
+    /**
+     * Overrides equals method.
+     */
     @Override
     public boolean equals(Object other) {
         return other == this // short circuit if same object
@@ -47,6 +72,9 @@ public boolean equals(Object other) {
                 && value.equals(((Id) other).value)); // state check
     }
 
+    /**
+     * Overrides hashCode method.
+     */
     @Override
     public int hashCode() {
         return value.hashCode();
diff --git a/src/main/java/seedu/address/model/transaction/Transaction.java b/src/main/java/seedu/address/model/transaction/Transaction.java
index 6319d1d054e..fe42032695f 100644
--- a/src/main/java/seedu/address/model/transaction/Transaction.java
+++ b/src/main/java/seedu/address/model/transaction/Transaction.java
@@ -17,7 +17,12 @@ public class Transaction {
     private final Billing billing;
 
     /**
-     * Every field must be present and not null.
+     * Constructs a {@code Transaction},
+     * every field must be present and not null.
+     *
+     * @param id member Id
+     * @param timestamp transaction timestamp
+     * @param billing billing details
      */
     public Transaction(Id id, Timestamp timestamp, Billing billing) {
         requireAllNonNull(id, timestamp, billing);
@@ -26,21 +31,39 @@ public Transaction(Id id, Timestamp timestamp, Billing billing) {
         this.billing = billing;
     }
 
+    /**
+     * Gets transaction id.
+     *
+     * @return id the transaction member id.
+     */
     public Id getId() {
         return id;
     }
 
+    /**
+     * Gets transaction timestamp.
+     *
+     * @return id the transaction timestamp.
+     */
     public Timestamp getTimestamp() {
         return timestamp;
     }
 
+    /**
+     * Gets transaction billing.
+     *
+     * @return id the transaction billing.
+     */
     public Billing getBilling() {
         return billing;
     }
 
     /**
-     * Returns true if both transactions have the same id.
+     * Returns whether is same id between other transactions.
      * This defines a weaker notion of equality between two transactions.
+     *
+     * @param otherTransaction
+     * @return boolean true if both transactions have the same id.
      */
     public boolean isSameId(Transaction otherTransaction) {
         if (otherTransaction == this) {
@@ -71,12 +94,20 @@ public boolean equals(Object other) {
                 && otherTransaction.getBilling().equals(getBilling());
     }
 
+    /**
+     * Overrides hashCode method.
+     */
     @Override
     public int hashCode() {
         // use this method for custom fields hashing instead of implementing your own
         return Objects.hash(timestamp, billing);
     }
 
+    /**
+     * Overrides toString method.
+     *
+     * @return String of transaction's information including Id, timestamp and billing.
+     */
     @Override
     public String toString() {
         final StringBuilder builder = new StringBuilder();
diff --git a/src/main/java/seedu/address/model/util/SampleDataUtil.java b/src/main/java/seedu/address/model/util/SampleDataUtil.java
index 706d94a2b2f..698711bad94 100644
--- a/src/main/java/seedu/address/model/util/SampleDataUtil.java
+++ b/src/main/java/seedu/address/model/util/SampleDataUtil.java
@@ -118,6 +118,9 @@ public static Member[] getSampleMembers() {
         };
     }
 
+    /**
+     * Gets default password.
+     */
     public static ReadOnlyAccount getDefaultPassword() {
         Password password;
         try {
@@ -128,6 +131,9 @@ public static ReadOnlyAccount getDefaultPassword() {
         return new Account(password);
     }
 
+    /**
+     * Gets Sample Ezfoodie
+     */
     public static ReadOnlyEzFoodie getSampleEzFoodie() {
         EzFoodie sampleEf = new EzFoodie();
         for (Member sampleMember : getSampleMembers()) {
diff --git a/src/main/java/seedu/address/storage/AccountStorage.java b/src/main/java/seedu/address/storage/AccountStorage.java
index a8862275ce3..8d129af1c0d 100644
--- a/src/main/java/seedu/address/storage/AccountStorage.java
+++ b/src/main/java/seedu/address/storage/AccountStorage.java
@@ -19,7 +19,8 @@ public interface AccountStorage {
 
     /**
      * Returns Account as a {@link ReadOnlyAccount}.
-     *   Returns {@code Optional.empty()} if storage file is not found.
+     * Returns {@code Optional.empty()} if storage file is not found.
+     *
      * @throws DataConversionException if the data in storage is not in the expected format.
      * @throws IOException if there was any problem when reading from the storage.
      */
@@ -32,6 +33,7 @@ public interface AccountStorage {
 
     /**
      * Saves the given {@link ReadOnlyAccount} to the storage.
+     *
      * @param account cannot be null.
      * @throws IOException if there was any problem writing to the file.
      */
diff --git a/src/main/java/seedu/address/storage/EzFoodieStorage.java b/src/main/java/seedu/address/storage/EzFoodieStorage.java
index 004f9e37e3e..793bcb1b1cb 100644
--- a/src/main/java/seedu/address/storage/EzFoodieStorage.java
+++ b/src/main/java/seedu/address/storage/EzFoodieStorage.java
@@ -19,7 +19,8 @@ public interface EzFoodieStorage {
 
     /**
      * Returns ezFoodie data as a {@link ReadOnlyEzFoodie}.
-     *   Returns {@code Optional.empty()} if storage file is not found.
+     * Returns {@code Optional.empty()} if storage file is not found.
+     *
      * @throws DataConversionException if the data in storage is not in the expected format.
      * @throws IOException if there was any problem when reading from the storage.
      */
@@ -32,6 +33,7 @@ public interface EzFoodieStorage {
 
     /**
      * Saves the given {@link ReadOnlyEzFoodie} to the storage.
+     *
      * @param ezFoodie cannot be null.
      * @throws IOException if there was any problem writing to the file.
      */
diff --git a/src/main/java/seedu/address/storage/JsonAccountStorage.java b/src/main/java/seedu/address/storage/JsonAccountStorage.java
index b5193a96e84..7c355e4fac8 100644
--- a/src/main/java/seedu/address/storage/JsonAccountStorage.java
+++ b/src/main/java/seedu/address/storage/JsonAccountStorage.java
@@ -23,16 +23,31 @@ public class JsonAccountStorage implements AccountStorage {
 
     private Path filePath;
 
+    /**
+     * Constructs {@code JsonAccountStorage} with {@code filePath}.
+     */
     public JsonAccountStorage(Path filePath) {
         this.filePath = filePath;
     }
 
+    /**
+     * gets account file path.
+     *
+     * @return Path of account file.
+     */
     public Path getAccountFilePath() {
         return filePath;
     }
 
+    /**
+     * Returns Account as a {@link ReadOnlyAccount}.
+     * Returns {@code Optional.empty()} if storage file is not found.
+     *
+     * @throws DataConversionException if the data in storage is not in the expected format.
+     * @throws IOException if there was any problem when reading from the storage.
+     */
     @Override
-    public Optional<ReadOnlyAccount> readAccount() throws DataConversionException, IOException {
+    public Optional<ReadOnlyAccount> readAccount() throws DataConversionException {
         return readAccount(filePath);
     }
 
@@ -59,6 +74,12 @@ public Optional<ReadOnlyAccount> readAccount(Path filePath) throws DataConversio
         }
     }
 
+    /**
+     * Saves the given {@link ReadOnlyAccount} to the storage.
+     *
+     * @param account cannot be null.
+     * @throws IOException if there was any problem writing to the file.
+     */
     @Override
     public void saveAccount(ReadOnlyAccount account) throws IOException {
         saveAccount(account, filePath);
diff --git a/src/main/java/seedu/address/storage/JsonAdaptedReservation.java b/src/main/java/seedu/address/storage/JsonAdaptedReservation.java
index 0c5ec9f5fa7..0d41eebc15f 100644
--- a/src/main/java/seedu/address/storage/JsonAdaptedReservation.java
+++ b/src/main/java/seedu/address/storage/JsonAdaptedReservation.java
@@ -32,7 +32,7 @@ public JsonAdaptedReservation(@JsonProperty("id") String id, @JsonProperty("date
     }
 
     /**
-     * Converts a given {@code Reservation} into this class for Jackson use.
+     * Constructs a given {@code Reservation} into this class for Jackson use.
      */
     public JsonAdaptedReservation(Reservation source) {
         id = source.getId().value;
diff --git a/src/main/java/seedu/address/storage/JsonAdaptedTag.java b/src/main/java/seedu/address/storage/JsonAdaptedTag.java
index 0df22bdb754..bd90bfcbf67 100644
--- a/src/main/java/seedu/address/storage/JsonAdaptedTag.java
+++ b/src/main/java/seedu/address/storage/JsonAdaptedTag.java
@@ -22,7 +22,7 @@ public JsonAdaptedTag(String tagName) {
     }
 
     /**
-     * Converts a given {@code Tag} into this class for Jackson use.
+     * Constructs a given {@code Tag} into this class for Jackson use.
      */
     public JsonAdaptedTag(Tag source) {
         tagName = source.tagName;
diff --git a/src/main/java/seedu/address/storage/JsonAdaptedTransaction.java b/src/main/java/seedu/address/storage/JsonAdaptedTransaction.java
index 88112851294..92f06828e54 100644
--- a/src/main/java/seedu/address/storage/JsonAdaptedTransaction.java
+++ b/src/main/java/seedu/address/storage/JsonAdaptedTransaction.java
@@ -34,7 +34,7 @@ public JsonAdaptedTransaction(@JsonProperty("id") String id,
     }
 
     /**
-     * Converts a given {@code Transaction} into this class for Jackson use.
+     * Constructs a given {@code Transaction} into this class for Jackson use.
      */
     public JsonAdaptedTransaction(Transaction source) {
         id = source.getId().value;
diff --git a/src/main/java/seedu/address/storage/JsonEzFoodieStorage.java b/src/main/java/seedu/address/storage/JsonEzFoodieStorage.java
index d7ed0179528..8711fee8899 100644
--- a/src/main/java/seedu/address/storage/JsonEzFoodieStorage.java
+++ b/src/main/java/seedu/address/storage/JsonEzFoodieStorage.java
@@ -23,14 +23,29 @@ public class JsonEzFoodieStorage implements EzFoodieStorage {
 
     private Path filePath;
 
+    /**
+     * Constructs a {@code JsonEzFoodieStorage} with the given ezFoodie file path details.
+     */
     public JsonEzFoodieStorage(Path filePath) {
         this.filePath = filePath;
     }
 
+    /**
+     * Gets EzFoodie file path.
+     *
+     * @return Path of EzFoodie file
+     */
     public Path getEzFoodieFilePath() {
         return filePath;
     }
 
+    /**
+     * Returns ezFoodie data as a {@link ReadOnlyEzFoodie}.
+     * Returns {@code Optional.empty()} if storage file is not found.
+     *
+     * @throws DataConversionException if the data in storage is not in the expected format.
+     * @throws IOException if there was any problem when reading from the storage.
+     */
     @Override
     public Optional<ReadOnlyEzFoodie> readEzFoodie() throws DataConversionException {
         return readEzFoodie(filePath);
@@ -59,6 +74,12 @@ public Optional<ReadOnlyEzFoodie> readEzFoodie(Path filePath) throws DataConvers
         }
     }
 
+    /**
+     * Saves the given {@link ReadOnlyEzFoodie} to the storage.
+     *
+     * @param ezFoodie cannot be null.
+     * @throws IOException if there was any problem writing to the file.
+     */
     @Override
     public void saveEzFoodie(ReadOnlyEzFoodie ezFoodie) throws IOException {
         saveEzFoodie(ezFoodie, filePath);
diff --git a/src/main/java/seedu/address/storage/JsonSerializableEzFoodie.java b/src/main/java/seedu/address/storage/JsonSerializableEzFoodie.java
index 7ee24f8e20f..2baa9a9c0c0 100644
--- a/src/main/java/seedu/address/storage/JsonSerializableEzFoodie.java
+++ b/src/main/java/seedu/address/storage/JsonSerializableEzFoodie.java
@@ -18,7 +18,9 @@
  */
 @JsonRootName(value = "ezfoodie")
 class JsonSerializableEzFoodie {
-
+    /**
+     * Stands for message od duplicated members.
+     */
     public static final String MESSAGE_DUPLICATE_MEMBER = "Members list contains duplicate member(s).";
 
     private final List<JsonAdaptedMember> members = new ArrayList<>();
diff --git a/src/main/java/seedu/address/storage/JsonUserPrefsStorage.java b/src/main/java/seedu/address/storage/JsonUserPrefsStorage.java
index bc2bbad84aa..c81da3de4ef 100644
--- a/src/main/java/seedu/address/storage/JsonUserPrefsStorage.java
+++ b/src/main/java/seedu/address/storage/JsonUserPrefsStorage.java
@@ -16,15 +16,28 @@ public class JsonUserPrefsStorage implements UserPrefsStorage {
 
     private Path filePath;
 
+    /**
+     * Constructs a {@code JsonUserPrefsStorage} with input {code filePath}.
+     */
     public JsonUserPrefsStorage(Path filePath) {
         this.filePath = filePath;
     }
 
+    /**
+     * Returns the file path of the UserPrefs data file.
+     */
     @Override
     public Path getUserPrefsFilePath() {
         return filePath;
     }
 
+    /**
+     * Returns UserPrefs data from storage.
+     * Returns {@code Optional.empty()} if storage file is not found.
+     *
+     * @throws DataConversionException if the data in storage is not in the expected format.
+     * @throws IOException if there was any problem when reading from the storage.
+     */
     @Override
     public Optional<UserPrefs> readUserPrefs() throws DataConversionException {
         return readUserPrefs(filePath);
@@ -32,6 +45,7 @@ public Optional<UserPrefs> readUserPrefs() throws DataConversionException {
 
     /**
      * Similar to {@link #readUserPrefs()}
+     *
      * @param prefsFilePath location of the data. Cannot be null.
      * @throws DataConversionException if the file format is not as expected.
      */
@@ -39,6 +53,12 @@ public Optional<UserPrefs> readUserPrefs(Path prefsFilePath) throws DataConversi
         return JsonUtil.readJsonFile(prefsFilePath, UserPrefs.class);
     }
 
+    /**
+     * Saves the given {@link seedu.address.model.ReadOnlyUserPrefs} to the storage.
+     *
+     * @param userPrefs cannot be null.
+     * @throws IOException if there was any problem writing to the file.
+     */
     @Override
     public void saveUserPrefs(ReadOnlyUserPrefs userPrefs) throws IOException {
         JsonUtil.saveJsonFile(userPrefs, filePath);
diff --git a/src/main/java/seedu/address/storage/Storage.java b/src/main/java/seedu/address/storage/Storage.java
index 719c48044ed..64bf7ee2933 100644
--- a/src/main/java/seedu/address/storage/Storage.java
+++ b/src/main/java/seedu/address/storage/Storage.java
@@ -15,24 +15,66 @@
  */
 public interface Storage extends EzFoodieStorage, AccountStorage, UserPrefsStorage {
 
+    /**
+     * Returns UserPrefs data from storage.
+     * Returns {@code Optional.empty()} if storage file is not found.
+     *
+     * @throws DataConversionException if the data in storage is not in the expected format.
+     * @throws IOException if there was any problem when reading from the storage.
+     */
     @Override
     Optional<UserPrefs> readUserPrefs() throws DataConversionException, IOException;
 
+    /**
+     * Saves the given {@link seedu.address.model.ReadOnlyUserPrefs} to the storage.
+     *
+     * @param userPrefs cannot be null.
+     * @throws IOException if there was any problem writing to the file.
+     */
     @Override
     void saveUserPrefs(ReadOnlyUserPrefs userPrefs) throws IOException;
 
+    /**
+     * Returns Account as a {@link ReadOnlyAccount}.
+     * Returns {@code Optional.empty()} if storage file is not found.
+     *
+     * @throws DataConversionException if the data in storage is not in the expected format.
+     * @throws IOException if there was any problem when reading from the storage.
+     */
     @Override
     Optional<ReadOnlyAccount> readAccount() throws DataConversionException, IOException;
 
+    /**
+     * Saves the given {@link ReadOnlyAccount} to the storage.
+     *
+     * @param account cannot be null.
+     * @throws IOException if there was any problem writing to the file.
+     */
     @Override
     void saveAccount(ReadOnlyAccount account) throws IOException;
 
+    /**
+     * Returns the file path of the data file.
+     */
     @Override
     Path getEzFoodieFilePath();
 
+    /**
+     * Returns ezFoodie data as a {@link ReadOnlyEzFoodie}.
+     * Returns {@code Optional.empty()} if storage file is not found.
+     *
+     * @throws DataConversionException if the data in storage is not in the expected format.
+     * @throws IOException if there was any problem when reading from the storage.
+     */
     @Override
     Optional<ReadOnlyEzFoodie> readEzFoodie() throws DataConversionException, IOException;
 
+    /**
+     * Saves the given {@link ReadOnlyEzFoodie} to the storage.
+     *
+     * @param ezFoodie cannot be null.
+     * @throws IOException if there was any problem writing to the file.
+     */
     @Override
     void saveEzFoodie(ReadOnlyEzFoodie ezFoodie) throws IOException;
 
diff --git a/src/main/java/seedu/address/storage/StorageManager.java b/src/main/java/seedu/address/storage/StorageManager.java
index 4a4b49e38a3..81ee2e29037 100644
--- a/src/main/java/seedu/address/storage/StorageManager.java
+++ b/src/main/java/seedu/address/storage/StorageManager.java
@@ -23,7 +23,7 @@ public class StorageManager implements Storage {
     private UserPrefsStorage userPrefsStorage;
 
     /**
-     * Creates a {@code StorageManager} with the given {@code AccountStorage}, {@code ezFoodieStorage}
+     * Constructs a {@code StorageManager} with the given {@code AccountStorage}, {@code ezFoodieStorage}
      * and {@code UserPrefStorage}.
      */
     public StorageManager(AccountStorage accountStorage, EzFoodieStorage ezFoodieStorage,
@@ -36,16 +36,32 @@ public StorageManager(AccountStorage accountStorage, EzFoodieStorage ezFoodieSto
 
     // ================ UserPrefs methods ==============================
 
+    /**
+     * Returns the file path of the UserPrefs data file.
+     */
     @Override
     public Path getUserPrefsFilePath() {
         return userPrefsStorage.getUserPrefsFilePath();
     }
 
+    /**
+     * Returns UserPrefs data from storage.
+     * Returns {@code Optional.empty()} if storage file is not found.
+     *
+     * @throws DataConversionException if the data in storage is not in the expected format.
+     * @throws IOException if there was any problem when reading from the storage.
+     */
     @Override
     public Optional<UserPrefs> readUserPrefs() throws DataConversionException, IOException {
         return userPrefsStorage.readUserPrefs();
     }
 
+    /**
+     * Saves the given {@link seedu.address.model.ReadOnlyUserPrefs} to the storage.
+     *
+     * @param userPrefs cannot be null.
+     * @throws IOException if there was any problem writing to the file.
+     */
     @Override
     public void saveUserPrefs(ReadOnlyUserPrefs userPrefs) throws IOException {
         userPrefsStorage.saveUserPrefs(userPrefs);
@@ -53,27 +69,49 @@ public void saveUserPrefs(ReadOnlyUserPrefs userPrefs) throws IOException {
 
     // ================== Account methods ===============================
 
+    /**
+     * Returns the file path of the account file.
+     */
     @Override
     public Path getAccountFilePath() {
         return accountStorage.getAccountFilePath();
     }
 
+    /**
+     * Returns Account as a {@link ReadOnlyAccount}.
+     * Returns {@code Optional.empty()} if storage file is not found.
+     *
+     * @throws DataConversionException if the data in storage is not in the expected format.
+     * @throws IOException if there was any problem when reading from the storage.
+     */
     @Override
     public Optional<ReadOnlyAccount> readAccount() throws DataConversionException, IOException {
         return accountStorage.readAccount();
     }
 
+    /**
+     * @see #getAccountFilePath()
+     */
     @Override
     public Optional<ReadOnlyAccount> readAccount(Path filePath) throws DataConversionException, IOException {
         logger.fine("Attempting to read account from file: " + filePath);
         return accountStorage.readAccount(filePath);
     }
 
+    /**
+     * Saves the given {@link ReadOnlyAccount} to the storage.
+     *
+     * @param account cannot be null.
+     * @throws IOException if there was any problem writing to the file.
+     */
     @Override
     public void saveAccount(ReadOnlyAccount account) throws IOException {
         accountStorage.saveAccount(account);
     }
 
+    /**
+     * @see #saveAccount(ReadOnlyAccount)
+     */
     @Override
     public void saveAccount(ReadOnlyAccount account, Path filePath) throws IOException {
         logger.fine("Attempting to write to account file: " + filePath);
@@ -82,27 +120,49 @@ public void saveAccount(ReadOnlyAccount account, Path filePath) throws IOExcepti
 
     // ================== EzFoodie methods ===============================
 
+    /**
+     * Returns the file path of the data file.
+     */
     @Override
     public Path getEzFoodieFilePath() {
         return ezFoodieStorage.getEzFoodieFilePath();
     }
 
+    /**
+     * Returns ezFoodie data as a {@link ReadOnlyEzFoodie}.
+     * Returns {@code Optional.empty()} if storage file is not found.
+     *
+     * @throws DataConversionException if the data in storage is not in the expected format.
+     * @throws IOException if there was any problem when reading from the storage.
+     */
     @Override
     public Optional<ReadOnlyEzFoodie> readEzFoodie() throws DataConversionException, IOException {
         return readEzFoodie(ezFoodieStorage.getEzFoodieFilePath());
     }
 
+    /**
+     * @see #getEzFoodieFilePath()
+     */
     @Override
     public Optional<ReadOnlyEzFoodie> readEzFoodie(Path filePath) throws DataConversionException, IOException {
         logger.fine("Attempting to read data from file: " + filePath);
         return ezFoodieStorage.readEzFoodie(filePath);
     }
 
+    /**
+     * Saves the given {@link ReadOnlyEzFoodie} to the storage.
+     *
+     * @param ezFoodie cannot be null.
+     * @throws IOException if there was any problem writing to the file.
+     */
     @Override
     public void saveEzFoodie(ReadOnlyEzFoodie ezFoodie) throws IOException {
         saveEzFoodie(ezFoodie, ezFoodieStorage.getEzFoodieFilePath());
     }
 
+    /**
+     * @see #saveEzFoodie(ReadOnlyEzFoodie)
+     */
     @Override
     public void saveEzFoodie(ReadOnlyEzFoodie ezFoodie, Path filePath) throws IOException {
         logger.fine("Attempting to write to data file: " + filePath);
diff --git a/src/main/java/seedu/address/storage/UserPrefsStorage.java b/src/main/java/seedu/address/storage/UserPrefsStorage.java
index 29eef178dbc..1eb07ff2880 100644
--- a/src/main/java/seedu/address/storage/UserPrefsStorage.java
+++ b/src/main/java/seedu/address/storage/UserPrefsStorage.java
@@ -20,7 +20,8 @@ public interface UserPrefsStorage {
 
     /**
      * Returns UserPrefs data from storage.
-     *   Returns {@code Optional.empty()} if storage file is not found.
+     * Returns {@code Optional.empty()} if storage file is not found.
+     *
      * @throws DataConversionException if the data in storage is not in the expected format.
      * @throws IOException if there was any problem when reading from the storage.
      */
@@ -28,6 +29,7 @@ public interface UserPrefsStorage {
 
     /**
      * Saves the given {@link seedu.address.model.ReadOnlyUserPrefs} to the storage.
+     *
      * @param userPrefs cannot be null.
      * @throws IOException if there was any problem writing to the file.
      */
diff --git a/src/main/java/seedu/address/ui/CommandBox.java b/src/main/java/seedu/address/ui/CommandBox.java
index 08210116ac1..1833a67cf47 100644
--- a/src/main/java/seedu/address/ui/CommandBox.java
+++ b/src/main/java/seedu/address/ui/CommandBox.java
@@ -13,10 +13,13 @@
 import seedu.address.logic.parser.exceptions.ParseException;
 
 /**
- * The UI component that is responsible for receiving user command inputs.
+ * Represents for the UI component that is responsible for receiving user command inputs.
  */
 public class CommandBox extends UiPart<Region> {
 
+    /**
+     * Stands for command box error style.
+     */
     public static final String ERROR_STYLE_CLASS = "error";
     private static final String FXML = "CommandBox.fxml";
 
@@ -26,7 +29,7 @@ public class CommandBox extends UiPart<Region> {
     private TextField commandTextField;
 
     /**
-     * Creates a {@code CommandBox} with the given {@code CommandExecutor}.
+     * Constructs a {@code CommandBox} with the given {@code CommandExecutor}.
      */
     public CommandBox(CommandExecutor commandExecutor) {
         super(FXML);
diff --git a/src/main/java/seedu/address/ui/HelpWindow.java b/src/main/java/seedu/address/ui/HelpWindow.java
index 8eaac33644d..08ed5b5437d 100644
--- a/src/main/java/seedu/address/ui/HelpWindow.java
+++ b/src/main/java/seedu/address/ui/HelpWindow.java
@@ -11,11 +11,18 @@
 import seedu.address.commons.core.LogsCenter;
 
 /**
- * Controller for a help page
+ * Represents for Controlling a help page
  */
 public class HelpWindow extends UiPart<Stage> {
+    /**
+     * Stands for help window URL to tP web page.
+     */
     public static final String OFFICIAL_URL =
             "https://ay2122s1-cs2103t-f12-4.github.io/tp/";
+
+    /**
+     * Stands for help command message.
+     */
     public static final String HELP_MESSAGE = "Features:\n"
             + "Add member: add -mem -n <NAME> -p <PHONE> -e <EMAIL> -a <ADDRESS>\n"
             + "Search by name: find -mem -n <NAME>\n"
@@ -42,7 +49,7 @@ public class HelpWindow extends UiPart<Stage> {
     private Label helpMessage;
 
     /**
-     * Creates a new HelpWindow.
+     * Constructs a new {@code HelpWindow}.
      *
      * @param root Stage to use as the root of the HelpWindow.
      */
@@ -52,7 +59,7 @@ public HelpWindow(Stage root) {
     }
 
     /**
-     * Creates a new HelpWindow.
+     * Constructs a new {@code HelpWindow}.
      */
     public HelpWindow() {
         this(new Stage());
diff --git a/src/main/java/seedu/address/ui/MainWindow.java b/src/main/java/seedu/address/ui/MainWindow.java
index 97d46ff9ffb..4a6cabcc4d6 100644
--- a/src/main/java/seedu/address/ui/MainWindow.java
+++ b/src/main/java/seedu/address/ui/MainWindow.java
@@ -54,7 +54,7 @@ public class MainWindow extends UiPart<Stage> {
     private StackPane statusbarPlaceholder;
 
     /**
-     * Creates a {@code MainWindow} with the given {@code Stage} and {@code Logic}.
+     * Constructs a {@code MainWindow} with the given {@code Stage} and {@code Logic}.
      */
     public MainWindow(Stage primaryStage, Logic logic) {
         super(FXML, primaryStage);
@@ -73,6 +73,11 @@ public MainWindow(Stage primaryStage, Logic logic) {
         summaryWindow = new SummaryWindow(logic);
     }
 
+    /**
+     * Gets primary stage.
+     *
+     * @return Stage for the primary stage
+     */
     public Stage getPrimaryStage() {
         return primaryStage;
     }
diff --git a/src/main/java/seedu/address/ui/MemberCard.java b/src/main/java/seedu/address/ui/MemberCard.java
index f615fc765f8..fd0246bf66a 100644
--- a/src/main/java/seedu/address/ui/MemberCard.java
+++ b/src/main/java/seedu/address/ui/MemberCard.java
@@ -25,7 +25,6 @@ public class MemberCard extends UiPart<Region> {
      *
      * @see <a href="https://github.com/se-edu/addressbook-level4/issues/336">The issue on AddressBook level 4</a>
      */
-
     public final Member member;
 
     @FXML
@@ -58,7 +57,7 @@ public class MemberCard extends UiPart<Region> {
     private FlowPane reservations;
 
     /**
-     * Creates a {@code MemberCode} with the given {@code Member} and index to display.
+     * Constructs a {@code MemberCode} with the given {@code Member} and index to display.
      */
     public MemberCard(Member member, int displayedIndex) {
         super(FXML);
@@ -91,6 +90,9 @@ public MemberCard(Member member, int displayedIndex) {
                 .forEach(tag -> tags.getChildren().add(new Label(tag.tagName)));
     }
 
+    /**
+     * Overrides the equals method.
+     */
     @Override
     public boolean equals(Object other) {
         // short circuit if same object
diff --git a/src/main/java/seedu/address/ui/MemberListPanel.java b/src/main/java/seedu/address/ui/MemberListPanel.java
index 7609f688fe6..d9b447e8b9a 100644
--- a/src/main/java/seedu/address/ui/MemberListPanel.java
+++ b/src/main/java/seedu/address/ui/MemberListPanel.java
@@ -11,7 +11,7 @@
 import seedu.address.model.member.Member;
 
 /**
- * Panel containing the list of members.
+ * Represents for Panel containing the list of members.
  */
 public class MemberListPanel extends UiPart<Region> {
     private static final String FXML = "MemberListPanel.fxml";
diff --git a/src/main/java/seedu/address/ui/MemberViewWindow.java b/src/main/java/seedu/address/ui/MemberViewWindow.java
index 16aff3b3cc7..2c5ca47e177 100644
--- a/src/main/java/seedu/address/ui/MemberViewWindow.java
+++ b/src/main/java/seedu/address/ui/MemberViewWindow.java
@@ -31,6 +31,9 @@ public MemberViewWindow(Logic logic) {
         memberDetailsView.setCellFactory(listView -> new MemberViewListCell());
     }
 
+    /**
+     * Represents a inner class for MemberViewListCell
+     */
     class MemberViewListCell extends ListCell<Member> {
         @Override
         protected void updateItem(Member member, boolean empty) {
diff --git a/src/main/java/seedu/address/ui/ResultDisplay.java b/src/main/java/seedu/address/ui/ResultDisplay.java
index 7d98e84eedf..1b8c96b4e87 100644
--- a/src/main/java/seedu/address/ui/ResultDisplay.java
+++ b/src/main/java/seedu/address/ui/ResultDisplay.java
@@ -20,6 +20,11 @@ public ResultDisplay() {
         super(FXML);
     }
 
+    /**
+     * Sets feedback to User with given message to display {@code feedbackToUser}.
+     *
+     * @param feedbackToUser message to display
+     */
     public void setFeedbackToUser(String feedbackToUser) {
         requireNonNull(feedbackToUser);
         resultDisplay.setText(feedbackToUser);
diff --git a/src/main/java/seedu/address/ui/SummaryWindow.java b/src/main/java/seedu/address/ui/SummaryWindow.java
index 16b06bc6979..c2ef93037eb 100644
--- a/src/main/java/seedu/address/ui/SummaryWindow.java
+++ b/src/main/java/seedu/address/ui/SummaryWindow.java
@@ -23,9 +23,10 @@ public class SummaryWindow extends UiPart<Stage> {
     private Label summaryMessage;
 
     /**
-     * Creates a new SummaryWindow.
+     * Constructs a new {@code SummaryWindow} .
      *
      * @param root Stage to use as the root of the SummaryWindow.
+     * @param logic summary of logic.
      */
     public SummaryWindow(Stage root, Logic logic) {
         super(FXML, root);
@@ -34,7 +35,7 @@ public SummaryWindow(Stage root, Logic logic) {
     }
 
     /**
-     * Creates a new SummaryWindow.
+     * Constructs a new {@code SummaryWindow} with input {@code logic}.
      */
     public SummaryWindow(Logic logic) {
         this(new Stage(), logic);
diff --git a/src/main/java/seedu/address/ui/UiManager.java b/src/main/java/seedu/address/ui/UiManager.java
index 882027e4537..df66bc301d7 100644
--- a/src/main/java/seedu/address/ui/UiManager.java
+++ b/src/main/java/seedu/address/ui/UiManager.java
@@ -16,7 +16,9 @@
  * The manager of the UI component.
  */
 public class UiManager implements Ui {
-
+    /**
+     * Stands for alert dialog pane filed id.
+     */
     public static final String ALERT_DIALOG_PANE_FIELD_ID = "alertDialogPane";
 
     private static final Logger logger = LogsCenter.getLogger(UiManager.class);
@@ -33,6 +35,9 @@ public UiManager(Logic logic) {
         this.logic = logic;
     }
 
+    /**
+     * Starts the UI (and the App).
+     */
     @Override
     public void start(Stage primaryStage) {
         logger.info("Starting UI...");

From 9ad3741bf0af8ef7b760aad55d6ff1f250efd422 Mon Sep 17 00:00:00 2001
From: Zhang Zhiyao <zzy1007102679@gmail.com>
Date: Thu, 4 Nov 2021 22:48:50 +0800
Subject: [PATCH 4/5] javadoc update

---
 .../seedu/address/commons/core/Config.java    | 19 +++---------
 .../address/commons/core/GuiSettings.java     |  3 --
 .../address/commons/core/LogsCenter.java      |  3 +-
 .../seedu/address/commons/core/Version.java   | 26 ++++++----------
 .../address/commons/core/index/Index.java     |  3 --
 .../address/logic/commands/AddCommand.java    |  2 +-
 .../logic/commands/AddMemberCommand.java      |  7 ++---
 .../logic/commands/AddReservationCommand.java | 11 +++----
 .../logic/commands/AddTransactionCommand.java | 16 +++++-----
 .../address/logic/commands/ClearCommand.java  |  5 ++-
 .../address/logic/commands/CommandResult.java | 29 ++++++-----------
 .../address/logic/commands/DeleteCommand.java |  2 +-
 .../logic/commands/DeleteMemberCommand.java   | 13 +++-----
 .../commands/DeleteReservationCommand.java    | 20 ++++++------
 .../commands/DeleteTransactionCommand.java    | 18 ++++-------
 .../address/logic/commands/EditCommand.java   |  1 -
 .../logic/commands/EditMemberCommand.java     | 31 ++-----------------
 .../commands/EditReservationCommand.java      | 28 +++++------------
 .../commands/EditTransactionCommand.java      | 30 ++++++------------
 .../address/logic/commands/ExitCommand.java   |  2 +-
 .../address/logic/commands/FindCommand.java   | 25 ++++++---------
 .../address/logic/commands/HelpCommand.java   |  2 +-
 .../address/logic/commands/ListCommand.java   |  5 +--
 .../address/logic/commands/LoginCommand.java  |  4 +--
 .../address/logic/commands/LogoutCommand.java |  2 +-
 .../address/logic/commands/RedeemCommand.java | 14 ++++-----
 .../address/logic/commands/SortCommand.java   |  9 ++----
 .../logic/commands/SummaryCommand.java        |  5 +--
 .../address/logic/commands/ViewCommand.java   |  7 ++---
 .../commands/exceptions/CommandException.java |  5 ---
 30 files changed, 110 insertions(+), 237 deletions(-)

diff --git a/src/main/java/seedu/address/commons/core/Config.java b/src/main/java/seedu/address/commons/core/Config.java
index a88bc3c50de..92eda01f430 100644
--- a/src/main/java/seedu/address/commons/core/Config.java
+++ b/src/main/java/seedu/address/commons/core/Config.java
@@ -19,36 +19,30 @@ public class Config {
     private Path userPrefsFilePath = Paths.get("preferences.json");
 
     /**
-     * Gets Log Level.
-     * 
-     * @return Level
+     * Gets Log Level from {@code logLevel}.
      */
     public Level getLogLevel() {
         return logLevel;
     }
 
     /**
-     * Sets Log Level.
-     *
-     * @param logLevel
+     * Sets Log Level from {@code logLevel}.
      */
     public void setLogLevel(Level logLevel) {
         this.logLevel = logLevel;
     }
 
     /**
-     * Gets User Prefs File Path.
+     * Gets User Prefs File Path from {@code userPrefsFilePath}.
      *
-     * @return Path
+     * @return Path of tge user prefs file path
      */
     public Path getUserPrefsFilePath() {
         return userPrefsFilePath;
     }
 
     /**
-     * Sets User Prefs File Path.
-     *
-     * @param userPrefsFilePath
+     * Sets User Prefs File Path from {@code userPrefsFilePath}.
      */
     public void setUserPrefsFilePath(Path userPrefsFilePath) {
         this.userPrefsFilePath = userPrefsFilePath;
@@ -56,9 +50,6 @@ public void setUserPrefsFilePath(Path userPrefsFilePath) {
 
     /**
      * Overrides the equal method for Config class.
-     *
-     * @param other
-     * @return boolean
      */
     @Override
     public boolean equals(Object other) {
diff --git a/src/main/java/seedu/address/commons/core/GuiSettings.java b/src/main/java/seedu/address/commons/core/GuiSettings.java
index 3c900ef379a..4015ab38c2e 100644
--- a/src/main/java/seedu/address/commons/core/GuiSettings.java
+++ b/src/main/java/seedu/address/commons/core/GuiSettings.java
@@ -64,9 +64,6 @@ public Point getWindowCoordinates() {
 
     /**
      * Overrides the equal method for GuiSettings.
-     *
-     * @param other
-     * @return boolean
      */
     @Override
     public boolean equals(Object other) {
diff --git a/src/main/java/seedu/address/commons/core/LogsCenter.java b/src/main/java/seedu/address/commons/core/LogsCenter.java
index f3640d59ae4..75aebef9dba 100644
--- a/src/main/java/seedu/address/commons/core/LogsCenter.java
+++ b/src/main/java/seedu/address/commons/core/LogsCenter.java
@@ -71,7 +71,7 @@ private static void addConsoleHandler(Logger logger) {
     }
 
     /**
-     * Remove all the handlers from {@code logger}.
+     * Removes all the handlers from {@code logger}.
      */
     private static void removeHandlers(Logger logger) {
         Arrays.stream(logger.getHandlers())
@@ -95,6 +95,7 @@ private static void addFileHandler(Logger logger) {
 
     /**
      * Creates a {@code FileHandler} for the log file.
+     *
      * @throws IOException if there are problems opening the file.
      */
     private static FileHandler createFileHandler() throws IOException {
diff --git a/src/main/java/seedu/address/commons/core/Version.java b/src/main/java/seedu/address/commons/core/Version.java
index 595c2696d51..f8aa0981042 100644
--- a/src/main/java/seedu/address/commons/core/Version.java
+++ b/src/main/java/seedu/address/commons/core/Version.java
@@ -12,7 +12,7 @@
 public class Version implements Comparable<Version> {
 
     /**
-     * Sets the VERSION_REGEX.
+     * Sets the version regex.
      */
     public static final String VERSION_REGEX = "V(\\d+)\\.(\\d+)\\.(\\d+)(ea)?";
 
@@ -36,36 +36,36 @@ public Version(int major, int minor, int patch, boolean isEarlyAccess) {
     }
 
     /**
-     * Gets the major.
+     * Gets the major from {@code major}.
      *
-     * @return int
+     * @return int of the major
      */
     public int getMajor() {
         return major;
     }
 
     /**
-     * Gets the minor.
+     * Gets the minor from {@code minor}.
      *
-     * @return int
+     * @return int of the minor.
      */
     public int getMinor() {
         return minor;
     }
 
     /**
-     * Gets the patch.
+     * Gets the patch from {@code patch}.
      *
-     * @return int
+     * @return int of the patch
      */
     public int getPatch() {
         return patch;
     }
 
     /**
-     * Judges the isEarlyAccess.
+     * Returns whether is early access.
      *
-     * @return int
+     * @return boolean ture is early access.
      */
     public boolean isEarlyAccess() {
         return isEarlyAccess;
@@ -103,9 +103,6 @@ public String toString() {
 
     /**
      * Overrides the compareTo method for Version class.
-     *
-     * @param other
-     * @return int
      */
     @Override
     public int compareTo(Version other) {
@@ -129,9 +126,6 @@ public int compareTo(Version other) {
 
     /**
      * Overrides the equal method for Version class.
-     *
-     * @param obj
-     * @return boolean
      */
     @Override
     public boolean equals(Object obj) {
@@ -148,8 +142,6 @@ public boolean equals(Object obj) {
 
     /**
      * Overrides the hashCode for Version class.
-     *
-     * @return int
      */
     @Override
     public int hashCode() {
diff --git a/src/main/java/seedu/address/commons/core/index/Index.java b/src/main/java/seedu/address/commons/core/index/Index.java
index 48c3458bfe5..2696a20c775 100644
--- a/src/main/java/seedu/address/commons/core/index/Index.java
+++ b/src/main/java/seedu/address/commons/core/index/Index.java
@@ -64,9 +64,6 @@ public static Index fromOneBased(int oneBasedIndex) {
 
     /**
      * Overrides the equal method
-     *
-     * @param other
-     * @return Boolean
      */
     @Override
     public boolean equals(Object other) {
diff --git a/src/main/java/seedu/address/logic/commands/AddCommand.java b/src/main/java/seedu/address/logic/commands/AddCommand.java
index 8dabbf2f2cf..9e3cab3ad0d 100644
--- a/src/main/java/seedu/address/logic/commands/AddCommand.java
+++ b/src/main/java/seedu/address/logic/commands/AddCommand.java
@@ -25,7 +25,7 @@ public abstract class AddCommand extends Command {
             + PREFIX_TRANSACTION + " (transaction details)";
 
     /**
-     * Overrides the execute method for addCommand class to execute model.
+     * Executes method for addCommand class to execute model.
      *
      * @param model {@code Model} which the command should operate on.
      * @return CommandResult for execute addCommand
diff --git a/src/main/java/seedu/address/logic/commands/AddMemberCommand.java b/src/main/java/seedu/address/logic/commands/AddMemberCommand.java
index 8e3196246d8..b9a9534174f 100644
--- a/src/main/java/seedu/address/logic/commands/AddMemberCommand.java
+++ b/src/main/java/seedu/address/logic/commands/AddMemberCommand.java
@@ -43,7 +43,7 @@ public class AddMemberCommand extends AddCommand {
     private final Member toAdd;
 
     /**
-     * Creates an AddMemberCommand to add the specified {@code Member}.
+     * Constructs an {@codeAddMemberCommand} to add the specified {@code Member}.
      */
     public AddMemberCommand(Member member) {
         requireNonNull(member);
@@ -51,7 +51,7 @@ public AddMemberCommand(Member member) {
     }
 
     /**
-     * Overrides and executes model.
+     * Executes model.
      *
      * @param model {@code Model} which the command should operate on.
      * @return CommandResult with toAdd member
@@ -71,9 +71,6 @@ public CommandResult execute(Model model) throws CommandException {
 
     /**
      * Overrides the equals method.
-     *
-     * @param other
-     * @return boolean
      */
     @Override
     public boolean equals(Object other) {
diff --git a/src/main/java/seedu/address/logic/commands/AddReservationCommand.java b/src/main/java/seedu/address/logic/commands/AddReservationCommand.java
index 6597db45130..1700d33140f 100644
--- a/src/main/java/seedu/address/logic/commands/AddReservationCommand.java
+++ b/src/main/java/seedu/address/logic/commands/AddReservationCommand.java
@@ -58,7 +58,7 @@ public class AddReservationCommand extends AddCommand {
     private final Id idToAdd;
 
     /**
-     * Constructs an AddReservationCommand to add the specified {@code Member}.
+     * Constructs an {@code AddReservationCommand} to add the specified {@code Member}.
      */
     public AddReservationCommand(Reservation reservation, Id id) {
         requireNonNull(id);
@@ -67,7 +67,7 @@ public AddReservationCommand(Reservation reservation, Id id) {
     }
 
     /**
-     * Overrides and executes the model.
+     * Executes the model in AddReservationCommand.
      *
      * @param model {@code Model} which the command should operate on.
      * @return CommandResult with edited member
@@ -92,8 +92,8 @@ public CommandResult execute(Model model) throws CommandException {
     /**
      * Creates and returns a {@code Member} with the details of {@code memberToEdit}.
      *
-     * @param memberToEdit
-     * @param reservation
+     * @param memberToEdit {@code memberToEdit} which the command should operate on.
+     * @param reservation {@code reservation} which the command should operate on.
      * @return member with updated reservations
      */
     private static Member createUpdatedReservations(Member memberToEdit, Reservation reservation) {
@@ -120,9 +120,6 @@ private static Member createUpdatedReservations(Member memberToEdit, Reservation
 
     /**
      * Overrides the equal method.
-     *
-     * @param other
-     * @return boolean
      */
     @Override
     public boolean equals(Object other) {
diff --git a/src/main/java/seedu/address/logic/commands/AddTransactionCommand.java b/src/main/java/seedu/address/logic/commands/AddTransactionCommand.java
index a2876d3c260..f949268c01f 100644
--- a/src/main/java/seedu/address/logic/commands/AddTransactionCommand.java
+++ b/src/main/java/seedu/address/logic/commands/AddTransactionCommand.java
@@ -45,6 +45,9 @@ public class AddTransactionCommand extends AddCommand {
             + PREFIX_BILLING + " " + "23.00 "
             + PREFIX_ID + " " + "10001";
 
+    /**
+     * Stands for the success message of new transaction added.
+     */
     public static final String MESSAGE_SUCCESS = "New transaction added: %1$s";
 
     private final Transaction transactionToAdd;
@@ -60,10 +63,10 @@ public AddTransactionCommand(Transaction transaction, Id id) {
     }
 
     /**
-     * Overrides and executes the model.
+     * Executes the model in add transaction command.
      *
      * @param model {@code Model} which the command should operate on.
-     * @return CommandResult with edited member
+     * @return CommandResult with edited member.
      * @throws CommandException
      */
     @Override
@@ -85,9 +88,9 @@ public CommandResult execute(Model model) throws CommandException {
     /**
      * Creates and returns a {@code Member} with the details of {@code memberToEdit}.
      *
-     * @param memberToEdit
-     * @param transaction
-     * @return member with updated transactions and points
+     * @param memberToEdit {@code memberToEdit} which the command should operate on.
+     * @param transaction {@code transaction} which the command should operate on.
+     * @return member with updated transactions and points.
      */
     private static Member createUpdatedCreditAndPointsMember(Member memberToEdit, Transaction transaction) {
         assert memberToEdit != null;
@@ -114,9 +117,6 @@ private static Member createUpdatedCreditAndPointsMember(Member memberToEdit, Tr
 
     /**
      * Overrides the equal method.
-     *
-     * @param other
-     * @return boolean
      */
     @Override
     public boolean equals(Object other) {
diff --git a/src/main/java/seedu/address/logic/commands/ClearCommand.java b/src/main/java/seedu/address/logic/commands/ClearCommand.java
index b9b77dbf8d4..bfbd2138059 100644
--- a/src/main/java/seedu/address/logic/commands/ClearCommand.java
+++ b/src/main/java/seedu/address/logic/commands/ClearCommand.java
@@ -22,10 +22,9 @@ public class ClearCommand extends Command {
 
 
     /**
-     * Overrides and Executes the model.
+     * Executes the model in the clear command.
      *
-     * @param model {@code Model} which the command should operate on
-     * @return CommandResult
+     * @param model {@code Model} which the command should operate on.
      */
     @Override
     public CommandResult execute(Model model) {
diff --git a/src/main/java/seedu/address/logic/commands/CommandResult.java b/src/main/java/seedu/address/logic/commands/CommandResult.java
index 73d36ab17ed..923e8aaa9be 100644
--- a/src/main/java/seedu/address/logic/commands/CommandResult.java
+++ b/src/main/java/seedu/address/logic/commands/CommandResult.java
@@ -32,13 +32,9 @@ public class CommandResult {
     private final boolean exit;
 
     /**
-     * Constructs a {@code CommandResult} with the specified fields.
-     *
-     * @param feedbackToUser
-     * @param showHelp
-     * @param exit
-     * @param showMemberView
-     * @param showSummary
+     * Constructs a {@code CommandResult} with the specified fields from {@code feedbackToUser},
+     * {@code showHelp}. {@code exit} {@code showMemberView} and
+     * {@codeshowSummary}
      */
     public CommandResult(String feedbackToUser, boolean showHelp, boolean exit, boolean showMemberView,
                          boolean showSummary) {
@@ -52,17 +48,15 @@ public CommandResult(String feedbackToUser, boolean showHelp, boolean exit, bool
     /**
      * Constructs a {@code CommandResult} with the specified {@code feedbackToUser},
      * and other fields set to their default value.
-     *
-     * @param feedbackToUser
      */
     public CommandResult(String feedbackToUser) {
         this(feedbackToUser, false, false, false, false);
     }
 
     /**
-     * Gets feedback to user
+     * Gets feedback to user.
      *
-     * @return string for feedback to user
+     * @return string for feedback to user.
      */
     public String getFeedbackToUser() {
         return feedbackToUser;
@@ -71,7 +65,7 @@ public String getFeedbackToUser() {
     /**
      * Determines whether the app should show help window.
      *
-     * @return boolean
+     * @return boolean if true is showHelp command.
      */
     public boolean isShowHelp() {
         return showHelp;
@@ -80,7 +74,7 @@ public boolean isShowHelp() {
     /**
      * Determines whether the app should show member window.
      *
-     * @return boolean
+     * @return boolean if true is shown member view command.
      */
     public boolean isShowMemberView() {
         return showMemberView;
@@ -89,7 +83,7 @@ public boolean isShowMemberView() {
     /**
      * Determines whether the app should show summary window.
      *
-     * @return boolean
+     * @return boolean if true is shown summary command.
      */
     public boolean isShowSummary() {
         return showSummary;
@@ -98,7 +92,7 @@ public boolean isShowSummary() {
     /**
      * Determines whether the app should exit.
      *
-     * @return boolean
+     * @return boolean if ture is exit command
      */
     public boolean isExit() {
         return exit;
@@ -106,9 +100,6 @@ public boolean isExit() {
 
     /**
      * Overrides the equal method.
-     *
-     * @param other
-     * @return boolean
      */
     @Override
     public boolean equals(Object other) {
@@ -131,8 +122,6 @@ public boolean equals(Object other) {
 
     /**
      * Overrides the hashCode method.
-     *
-     * @return int for hashed value
      */
     @Override
     public int hashCode() {
diff --git a/src/main/java/seedu/address/logic/commands/DeleteCommand.java b/src/main/java/seedu/address/logic/commands/DeleteCommand.java
index 3f3364e11a1..fffd69cfd2e 100644
--- a/src/main/java/seedu/address/logic/commands/DeleteCommand.java
+++ b/src/main/java/seedu/address/logic/commands/DeleteCommand.java
@@ -28,7 +28,7 @@ public abstract class DeleteCommand extends Command {
      * Overrides and executes model.
      *
      * @param model {@code Model} which the command should operate on.
-     * @return CommandResult
+     * @return CommandResult of related commands.
      * @throws CommandException
      */
     @Override
diff --git a/src/main/java/seedu/address/logic/commands/DeleteMemberCommand.java b/src/main/java/seedu/address/logic/commands/DeleteMemberCommand.java
index 13762ffb86e..f0284de563c 100644
--- a/src/main/java/seedu/address/logic/commands/DeleteMemberCommand.java
+++ b/src/main/java/seedu/address/logic/commands/DeleteMemberCommand.java
@@ -46,9 +46,9 @@ public class DeleteMemberCommand extends DeleteCommand {
     private final Id id;
 
     /**
-     * Creates an DeleteCommand to delete the specified {@code Member} by index number.
+     * Creates an DeleteCommand to delete the specified {@code Member} by {@code index} number
      *
-     * @param index
+     * @param index the index shown in the page.
      */
     public DeleteMemberCommand(Index index) {
         requireNonNull(index);
@@ -59,7 +59,7 @@ public DeleteMemberCommand(Index index) {
     /**
      * Creates an DeleteCommand to delete the specified {@code Member} by member ID.
      *
-     * @param id
+     * @param id the member ID.
      */
     public DeleteMemberCommand(Id id) {
         requireNonNull(id);
@@ -68,10 +68,10 @@ public DeleteMemberCommand(Id id) {
     }
 
     /**
-     * Overrides and executes model.
+     * Executes the model.
      *
      * @param model {@code Model} which the command should operate on.
-     * @return CommandResult
+     * @return CommandResult related delete member command.
      * @throws CommandException
      */
     @Override
@@ -102,9 +102,6 @@ public CommandResult execute(Model model) throws CommandException {
 
     /**
      * Overrides equals method.
-     *
-     * @param other
-     * @return
      */
     @Override
     public boolean equals(Object other) {
diff --git a/src/main/java/seedu/address/logic/commands/DeleteReservationCommand.java b/src/main/java/seedu/address/logic/commands/DeleteReservationCommand.java
index b9e20721fde..1fb30a78053 100644
--- a/src/main/java/seedu/address/logic/commands/DeleteReservationCommand.java
+++ b/src/main/java/seedu/address/logic/commands/DeleteReservationCommand.java
@@ -57,10 +57,11 @@ public class DeleteReservationCommand extends DeleteCommand {
     private final Id reservationId;
 
     /**
-     * Constructs DeleteReservationCommand to delete the specified {@code Member} by member ID and transaction ID.
+     * Constructs DeleteReservationCommand to delete the specified {@code Member}
+     * by {@code memberID} and {@code reservationId}.
      *
-     * @param memberId
-     * @param reservationId
+     * @param memberId the member Id
+     * @param reservationId the reservation id
      */
     public DeleteReservationCommand(seedu.address.model.member.Id memberId, Id reservationId) {
         requireAllNonNull(memberId, reservationId);
@@ -69,10 +70,10 @@ public DeleteReservationCommand(seedu.address.model.member.Id memberId, Id reser
     }
 
     /**
-     * Creates and returns a {@code Member} with the details of {@code memberToEdit}.
+     * Creates and returns a {@code Member} with the details of {@code memberToEdit} and {@code reservation}.
      *
-     * @param memberToEdit
-     * @param reservation
+     * @param memberToEdit the member to edit.
+     * @param reservation the reservation will to remove
      * @return Member with updated reservation
      */
     private static Member createUpdatedReservation(Member memberToEdit, Reservation reservation) {
@@ -98,10 +99,10 @@ private static Member createUpdatedReservation(Member memberToEdit, Reservation
     }
 
     /**
-     * Overrides and executes the model.
+     * Executes the model.
      *
      * @param model {@code Model} which the command should operate on.
-     * @return CommandResult
+     * @return CommandResult related delete reservation command.
      * @throws CommandException
      */
     @Override
@@ -128,9 +129,6 @@ public CommandResult execute(Model model) throws CommandException {
 
     /**
      * Overrides the equals method.
-     *
-     * @param other
-     * @return boolean
      */
     @Override
     public boolean equals(Object other) {
diff --git a/src/main/java/seedu/address/logic/commands/DeleteTransactionCommand.java b/src/main/java/seedu/address/logic/commands/DeleteTransactionCommand.java
index 29a54cec980..148b26828bb 100644
--- a/src/main/java/seedu/address/logic/commands/DeleteTransactionCommand.java
+++ b/src/main/java/seedu/address/logic/commands/DeleteTransactionCommand.java
@@ -57,10 +57,7 @@ public class DeleteTransactionCommand extends DeleteCommand {
     private final seedu.address.model.transaction.Id transactionId;
 
     /**
-     * Constructs an DeleteCommand to delete the specified {@code Member} by member ID and transaction ID.
-     *
-     * @param memberId
-     * @param transactionId
+     * Constructs an DeleteCommand to delete the specified {@code Member} by {@code memberId} and {@code transactionId}.
      */
     public DeleteTransactionCommand(
             seedu.address.model.member.Id memberId, seedu.address.model.transaction.Id transactionId) {
@@ -72,8 +69,8 @@ public DeleteTransactionCommand(
     /**
      * Creates and returns a {@code Member} with the details of {@code memberToEdit}.
      *
-     * @param memberToEdit
-     * @param transaction
+     * @param memberToEdit create a new member to edit and update.
+     * @param transaction the transaction will be deleted.
      * @return Member with added transactions and updated credits
      */
     private static Member createUpdatedCredits(Member memberToEdit, Transaction transaction) {
@@ -102,10 +99,10 @@ private static Member createUpdatedCredits(Member memberToEdit, Transaction tran
     }
 
     /**
-     * Overrides and executes the model.
+     * Executes the model.
      *
      * @param model {@code Model} which the command should operate on.
-     * @return CommandResult
+     * @return CommandResult delete transaction command.
      * @throws CommandException
      */
     @Override
@@ -131,10 +128,7 @@ public CommandResult execute(Model model) throws CommandException {
     }
 
     /**
-     * Overrides the equals method
-     *
-     * @param other
-     * @return boolean
+     * Overrides the equals method.
      */
     @Override
     public boolean equals(Object other) {
diff --git a/src/main/java/seedu/address/logic/commands/EditCommand.java b/src/main/java/seedu/address/logic/commands/EditCommand.java
index 4cf5e982de5..124c8c47449 100644
--- a/src/main/java/seedu/address/logic/commands/EditCommand.java
+++ b/src/main/java/seedu/address/logic/commands/EditCommand.java
@@ -28,7 +28,6 @@ public abstract class EditCommand extends Command {
      * Overrides the executes command.
      *
      * @param model {@code Model} which the command should operate on.
-     * @return
      * @throws CommandException
      */
     @Override
diff --git a/src/main/java/seedu/address/logic/commands/EditMemberCommand.java b/src/main/java/seedu/address/logic/commands/EditMemberCommand.java
index c3e21ded799..36f6589aafc 100644
--- a/src/main/java/seedu/address/logic/commands/EditMemberCommand.java
+++ b/src/main/java/seedu/address/logic/commands/EditMemberCommand.java
@@ -95,8 +95,8 @@ public class EditMemberCommand extends EditCommand {
     /**
      * Constructs EditMemberCommand to edit member by index.
      *
-     * @param index of the member in the updated member list to edit
-     * @param editMemberDescriptor details to edit the member with
+     * @param index of the member in the updated member list to edit.
+     * @param editMemberDescriptor details to edit the member with.
      */
     public EditMemberCommand(Index index, EditMemberDescriptor editMemberDescriptor) {
         requireNonNull(index);
@@ -126,7 +126,7 @@ public EditMemberCommand(Id id, EditMemberDescriptor editMemberDescriptor) {
      * Overrides and executes model.
      *
      * @param model {@code Model} which the command should operate on.
-     * @return CommandResult
+     * @return CommandResult related edit member command.
      * @throws CommandException
      */
     @Override
@@ -162,9 +162,6 @@ public CommandResult execute(Model model) throws CommandException {
     /**
      * Creates and returns a {@code Member} with the details of {@code memberToEdit}
      * edited with {@code editMemberDescriptor}.
-     *
-     * @param memberToEdit
-     * @param editMemberDescriptor
      * @return Member with edited member
      */
     private static Member createEditedMember(Member memberToEdit, EditMemberDescriptor editMemberDescriptor) {
@@ -188,9 +185,6 @@ private static Member createEditedMember(Member memberToEdit, EditMemberDescript
 
     /**
      * Overrides the equals method.
-     *
-     * @param other
-     * @return boolean
      */
     @Override
     public boolean equals(Object other) {
@@ -235,8 +229,6 @@ public boolean isAnyFieldEdited() {
 
         /**
          * Sets name.
-         *
-         * @param name
          */
         public void setName(Name name) {
             this.name = name;
@@ -244,8 +236,6 @@ public void setName(Name name) {
 
         /**
          * Gets name.
-         *
-         * @return Optional<Name>
          */
         public Optional<Name> getName() {
             return Optional.ofNullable(name);
@@ -253,8 +243,6 @@ public Optional<Name> getName() {
 
         /**
          * Sets phone.
-         *
-         * @param phone
          */
         public void setPhone(Phone phone) {
             this.phone = phone;
@@ -262,8 +250,6 @@ public void setPhone(Phone phone) {
 
         /**
          * Gets phone.
-         *
-         * @return Optional<Phone>
          */
         public Optional<Phone> getPhone() {
             return Optional.ofNullable(phone);
@@ -271,8 +257,6 @@ public Optional<Phone> getPhone() {
 
         /**
          * Sets email.
-         *
-         * @param email
          */
         public void setEmail(Email email) {
             this.email = email;
@@ -280,8 +264,6 @@ public void setEmail(Email email) {
 
         /**
          * Gets email.
-         *
-         * @return Optional<Email>
          */
         public Optional<Email> getEmail() {
             return Optional.ofNullable(email);
@@ -289,8 +271,6 @@ public Optional<Email> getEmail() {
 
         /**
          * Sets address.
-         *
-         * @param address
          */
         public void setAddress(Address address) {
             this.address = address;
@@ -298,8 +278,6 @@ public void setAddress(Address address) {
 
         /**
          * Gets address.
-         *
-         * @return Optional<Address>
          */
         public Optional<Address> getAddress() {
             return Optional.ofNullable(address);
@@ -326,9 +304,6 @@ public Optional<Set<Tag>> getTags() {
 
         /**
          * Overrides the equal method.
-         *
-         * @param other
-         * @return boolean
          */
         @Override
         public boolean equals(Object other) {
diff --git a/src/main/java/seedu/address/logic/commands/EditReservationCommand.java b/src/main/java/seedu/address/logic/commands/EditReservationCommand.java
index 542eafa2209..d235a831eb2 100644
--- a/src/main/java/seedu/address/logic/commands/EditReservationCommand.java
+++ b/src/main/java/seedu/address/logic/commands/EditReservationCommand.java
@@ -59,7 +59,7 @@ public class EditReservationCommand extends EditCommand {
             + PREFIX_REMARK + " 3 people";
 
     /**
-     * Stands for succeed message of edit member
+     * Stands for succeed message of edit member.
      */
     public static final String MESSAGE_SUCCESS = "Edited Member: %1$s";
 
@@ -89,11 +89,9 @@ public EditReservationCommand(
     }
 
     /**
-     * Creates and returns a {@code Member} with the details of {@code memberToEdit}
+     * Creates and returns a {@code Member} with the details of {@code memberToEdit},
+     * {@code reservationToEdit}, {@code editReservationDescriptor}
      *
-     * @param memberToEdit
-     * @param reservationToEdit
-     * @param editReservationDescriptor
      * @return member with updated credits
      */
     private static Member createUpdatedCredits(
@@ -130,7 +128,7 @@ private static Member createUpdatedCredits(
      * Overrides and executes the model.
      *
      * @param model {@code Model} which the command should operate on.
-     * @return CommandResult
+     * @return CommandResult related to edit reservation command.
      * @throws CommandException
      */
     @Override
@@ -157,9 +155,6 @@ public CommandResult execute(Model model) throws CommandException {
 
     /**
      * Overrides the equal method.
-     *
-     * @param other
-     * @return boolean
      */
     @Override
     public boolean equals(Object other) {
@@ -196,7 +191,7 @@ public EditReservationDescriptor(EditReservationDescriptor toCopy) {
         /**
          * Returns true if at least one field is edited.
          *
-         * @return boolean
+         * @return boolean if true some filed is edited.
          */
         public boolean isAnyFieldEdited() {
             return CollectionUtil.isAnyNonNull(dateTime, remark);
@@ -205,7 +200,7 @@ public boolean isAnyFieldEdited() {
         /**
          * Sets DateTime.
          *
-         * @param dateTime
+         * @param dateTime the date time for editing.
          */
         public void setDateTime(DateTime dateTime) {
             this.dateTime = dateTime;
@@ -213,17 +208,13 @@ public void setDateTime(DateTime dateTime) {
 
         /**
          * Gets dateTime.
-         *
-         * @return dateTime
          */
         public Optional<DateTime> getDateTime() {
             return Optional.ofNullable(dateTime);
         }
 
         /**
-         * Sets remark.
-         *
-         * @param remark
+         * Sets remark from {@code remark}.
          */
         public void setRemark(Remark remark) {
             this.remark = remark;
@@ -231,8 +222,6 @@ public void setRemark(Remark remark) {
 
         /**
          * Gets remark.
-         *
-         * @return Optional<Remark>
          */
         public Optional<Remark> getRemark() {
             return Optional.ofNullable(remark);
@@ -240,9 +229,6 @@ public Optional<Remark> getRemark() {
 
         /**
          * Override the equal method.
-         *
-         * @param other
-         * @return boolean
          */
         @Override
         public boolean equals(Object other) {
diff --git a/src/main/java/seedu/address/logic/commands/EditTransactionCommand.java b/src/main/java/seedu/address/logic/commands/EditTransactionCommand.java
index 12a9d687d48..60079486093 100644
--- a/src/main/java/seedu/address/logic/commands/EditTransactionCommand.java
+++ b/src/main/java/seedu/address/logic/commands/EditTransactionCommand.java
@@ -86,11 +86,9 @@ public EditTransactionCommand(
     }
 
     /**
-     * Creates and returns a {@code Member} with the details of {@code memberToEdit}.
+     * Creates and returns a {@code Member} with the details of {@code memberToEdit},
+     * {@code transactionToEdit} and {@code editTransactionDescriptor}.
      *
-     * @param memberToEdit
-     * @param transactionToEdit
-     * @param editTransactionDescriptor
      * @return member with updated credits
      */
     private static Member createUpdatedCredits(
@@ -133,7 +131,7 @@ private static Member createUpdatedCredits(
      * Overrides and executes model
      *
      * @param model {@code Model} which the command should operate on.
-     * @return CommandResult
+     * @return CommandResult related to edir transaction command.
      * @throws CommandException
      */
     @Override
@@ -160,9 +158,6 @@ public CommandResult execute(Model model) throws CommandException {
 
     /**
      * Overrides the equals method.
-     *
-     * @param other
-     * @return boolean
      */
     @Override
     public boolean equals(Object other) {
@@ -201,36 +196,32 @@ public boolean isAnyFieldEdited() {
         }
 
         /**
-         * Sets time stamp.
+         * Sets time stamp from input {@code timestamp}.
          *
-         * @param timestamp
+         * @param timestamp transaction's timestamp.
          */
         public void setTimestamp(Timestamp timestamp) {
             this.timestamp = timestamp;
         }
 
         /**
-         * Gets time stamp
-         *
-         * @return Optional<Timestamp>
+         * Gets time stamp.
          */
         public Optional<Timestamp> getTimestamp() {
             return Optional.ofNullable(timestamp);
         }
 
         /**
-         * Sets Billing
+         * Sets Billing from {@code billing}.
          *
-         * @param billing
+         * @param billing transaction's billing.
          */
         public void setBilling(Billing billing) {
             this.billing = billing;
         }
 
         /**
-         * Gets billing
-         *
-         * @return Optional<Billing>
+         * Gets billing.
          */
         public Optional<Billing> getBilling() {
             return Optional.ofNullable(billing);
@@ -238,9 +229,6 @@ public Optional<Billing> getBilling() {
 
         /**
          * Overrides the equals method.
-         *
-         * @param other
-         * @return boolean
          */
         @Override
         public boolean equals(Object other) {
diff --git a/src/main/java/seedu/address/logic/commands/ExitCommand.java b/src/main/java/seedu/address/logic/commands/ExitCommand.java
index 4f8c7653f14..9ff7e532242 100644
--- a/src/main/java/seedu/address/logic/commands/ExitCommand.java
+++ b/src/main/java/seedu/address/logic/commands/ExitCommand.java
@@ -21,7 +21,7 @@ public class ExitCommand extends Command {
      * Overrides and executes the model
      *
      * @param model {@code Model} which the command should operate on.
-     * @return CommandResult
+     * @return CommandResult related to edit command.
      */
     @Override
     public CommandResult execute(Model model) {
diff --git a/src/main/java/seedu/address/logic/commands/FindCommand.java b/src/main/java/seedu/address/logic/commands/FindCommand.java
index bc9bab515d8..3da58f7cb8e 100644
--- a/src/main/java/seedu/address/logic/commands/FindCommand.java
+++ b/src/main/java/seedu/address/logic/commands/FindCommand.java
@@ -54,18 +54,16 @@ public class FindCommand extends Command {
     private final Predicate<Member> predicate;
 
     /**
-     * Constructs FindCommand through Id.
-     *
-     * @param predicate
+     * Constructs FindCommand through Id from input {@code predicate}.
      */
     public FindCommand(IdContainsKeywordsPredicate predicate) {
         this.predicate = predicate;
     }
 
     /**
-     * Constructs FindCommand through Name.
+     * Constructs FindCommand through Name {@code predicate}.
      *
-     * @param predicate
+     * @param predicate the details of contain key words for name.
      */
     public FindCommand(NameContainsKeywordsPredicate predicate) {
         this.predicate = predicate;
@@ -74,35 +72,35 @@ public FindCommand(NameContainsKeywordsPredicate predicate) {
     /**
      * Constructs FindCommand through Phone.
      *
-     * @param predicate
+     * @param predicate the details of contain key words for phone.
      */
     public FindCommand(PhoneContainsKeywordsPredicate predicate) {
         this.predicate = predicate;
     }
 
     /**
-     * Constructs FindCommand through Email.
+     * Constructs FindCommand through Email {@code predicate}.
      *
-     * @param predicate
+     * @param predicate the details of contain key words for email.
      */
     public FindCommand(EmailContainsKeywordsPredicate predicate) {
         this.predicate = predicate;
     }
 
     /**
-     * Constructs FindCommand through RegistrationDate.
+     * Constructs FindCommand through RegistrationDate {@code predicate}.
      *
-     * @param predicate
+     * @param predicate the details of contain key words for registration date.
      */
     public FindCommand(RegistrationDateContainsKeywordsPredicate predicate) {
         this.predicate = predicate;
     }
 
     /**
-     * Overrides and executes model.
+     * Executes the model.
      *
      * @param model {@code Model} which the command should operate on.
-     * @return CommandResult
+     * @return CommandResult related to find command.
      */
     @Override
     public CommandResult execute(Model model) {
@@ -114,9 +112,6 @@ public CommandResult execute(Model model) {
 
     /**
      * Overrides the equals method.
-     *
-     * @param other
-     * @return boolean
      */
     @Override
     public boolean equals(Object other) {
diff --git a/src/main/java/seedu/address/logic/commands/HelpCommand.java b/src/main/java/seedu/address/logic/commands/HelpCommand.java
index b6b0d261df9..75fe5e43016 100644
--- a/src/main/java/seedu/address/logic/commands/HelpCommand.java
+++ b/src/main/java/seedu/address/logic/commands/HelpCommand.java
@@ -27,7 +27,7 @@ public class HelpCommand extends Command {
      * Overrides and executes the model.
      *
      * @param model {@code Model} which the command should operate on.
-     * @return CommandResult
+     * @return CommandResult related to help command.
      */
     @Override
     public CommandResult execute(Model model) {
diff --git a/src/main/java/seedu/address/logic/commands/ListCommand.java b/src/main/java/seedu/address/logic/commands/ListCommand.java
index 7f9ddb640ec..6f2c7a9f70c 100644
--- a/src/main/java/seedu/address/logic/commands/ListCommand.java
+++ b/src/main/java/seedu/address/logic/commands/ListCommand.java
@@ -33,7 +33,7 @@ public class ListCommand extends Command {
      * Overrides and Executes the model.
      *
      * @param model {@code Model} which the command should operate on.
-     * @return CommandResult
+     * @return CommandResult related to list command.
      */
     @Override
     public CommandResult execute(Model model) {
@@ -44,9 +44,6 @@ public CommandResult execute(Model model) {
 
     /**
      * Overrides the equals method.
-     *
-     * @param other
-     * @return boolean
      */
     @Override
     public boolean equals(Object other) {
diff --git a/src/main/java/seedu/address/logic/commands/LoginCommand.java b/src/main/java/seedu/address/logic/commands/LoginCommand.java
index 6199a7faef2..8788398521e 100644
--- a/src/main/java/seedu/address/logic/commands/LoginCommand.java
+++ b/src/main/java/seedu/address/logic/commands/LoginCommand.java
@@ -43,7 +43,7 @@ public class LoginCommand extends Command {
     /**
      * Constructs LoginCommand
      *
-     * @param password
+     * @param password the login password.
      */
     public LoginCommand(Password password) {
         this.password = password;
@@ -53,7 +53,7 @@ public LoginCommand(Password password) {
      * Overrides and executes the model
      *
      * @param model {@code Model} which the command should operate on.
-     * @return CommandResult
+     * @return CommandResult related to login command.
      */
     @Override
     public CommandResult execute(Model model) {
diff --git a/src/main/java/seedu/address/logic/commands/LogoutCommand.java b/src/main/java/seedu/address/logic/commands/LogoutCommand.java
index 21e5e465e5a..8fb6c08f4a9 100644
--- a/src/main/java/seedu/address/logic/commands/LogoutCommand.java
+++ b/src/main/java/seedu/address/logic/commands/LogoutCommand.java
@@ -30,7 +30,7 @@ public class LogoutCommand extends Command {
      * Overrides and executes the model.
      *
      * @param model {@code Model} which the command should operate on.
-     * @return CommandResult
+     * @return CommandResult related to logout command.
      */
     @Override
     public CommandResult execute(Model model) {
diff --git a/src/main/java/seedu/address/logic/commands/RedeemCommand.java b/src/main/java/seedu/address/logic/commands/RedeemCommand.java
index ffa6c945629..499fb5fb223 100644
--- a/src/main/java/seedu/address/logic/commands/RedeemCommand.java
+++ b/src/main/java/seedu/address/logic/commands/RedeemCommand.java
@@ -79,8 +79,8 @@ public class RedeemCommand extends Command {
     /**
      * Constructs an RedeemCommand to add the specified {@code Member} by id.
      *
-     * @param pointsToRedeemList
-     * @param id
+     * @param pointsToRedeemList the points of to redeemed list.
+     * @param id the member id that needs to redeem point.
      */
     public RedeemCommand(List<Point> pointsToRedeemList, Id id) {
         requireAllNonNull(pointsToRedeemList, id);
@@ -92,8 +92,8 @@ public RedeemCommand(List<Point> pointsToRedeemList, Id id) {
     /**
      * Constructs an RedeemCommand to add the specified {@code Member} by index.
      *
-     * @param pointsToRedeemList
-     * @param index
+     * @param pointsToRedeemList the points of to redeemed list.
+     * @param index the member index that needs to redeem point.
      */
     public RedeemCommand(List<Point> pointsToRedeemList, Index index) {
         requireAllNonNull(pointsToRedeemList, index);
@@ -106,7 +106,7 @@ public RedeemCommand(List<Point> pointsToRedeemList, Index index) {
      * Overrides and executes the model.
      *
      * @param model {@code Model} which the command should operate on.
-     * @return CommandResult
+     * @return CommandResult related to redeem command.
      * @throws CommandException
      */
     @Override
@@ -143,8 +143,8 @@ public CommandResult execute(Model model) throws CommandException {
      * Creates and returns a {@code Member} with the details of {@code memberToEdit}
      * edited with {@code editMemberDescriptor}.
      *
-     * @param memberToRedeemPoints
-     * @param toRedeemPointsList
+     * @param memberToRedeemPoints creates the member who need to be redeemed points.
+     * @param toRedeemPointsList the list of points need to redeem all.
      * @return Member with redeemed Points
      * @throws CommandException
      */
diff --git a/src/main/java/seedu/address/logic/commands/SortCommand.java b/src/main/java/seedu/address/logic/commands/SortCommand.java
index d917e713bf4..5d27a8c6d16 100644
--- a/src/main/java/seedu/address/logic/commands/SortCommand.java
+++ b/src/main/java/seedu/address/logic/commands/SortCommand.java
@@ -48,9 +48,7 @@ public class SortCommand extends Command {
     private final CreditSortComparator comparator;
 
     /**
-     * Constructs SortCommand。
-     *
-     * @param comparator
+     * Constructs SortCommand by {@code comparator}.
      */
     public SortCommand(CreditSortComparator comparator) {
         this.comparator = comparator;
@@ -60,7 +58,7 @@ public SortCommand(CreditSortComparator comparator) {
      * Overrides and executes the model.
      *
      * @param model {@code Model} which the command should operate on.
-     * @return CommandResult
+     * @return CommandResult related to sort command.
      */
     @Override
     public CommandResult execute(Model model) {
@@ -75,9 +73,6 @@ public CommandResult execute(Model model) {
 
     /**
      * Overrides the equals method.
-     *
-     * @param other
-     * @return
      */
     @Override
     public boolean equals(Object other) {
diff --git a/src/main/java/seedu/address/logic/commands/SummaryCommand.java b/src/main/java/seedu/address/logic/commands/SummaryCommand.java
index 1a567f3a2a4..52744c0f481 100644
--- a/src/main/java/seedu/address/logic/commands/SummaryCommand.java
+++ b/src/main/java/seedu/address/logic/commands/SummaryCommand.java
@@ -32,7 +32,7 @@ public class SummaryCommand extends Command {
      * Overrides and executes model.
      *
      * @param model {@code Model} which the command should operate on.
-     * @return CommandResult
+     * @return CommandResult related to summary command.
      */
     @Override
     public CommandResult execute(Model model) {
@@ -43,9 +43,6 @@ public CommandResult execute(Model model) {
 
     /**
      * Overrides the equals method.
-     *
-     * @param other
-     * @return boolean
      */
     @Override
     public boolean equals(Object other) {
diff --git a/src/main/java/seedu/address/logic/commands/ViewCommand.java b/src/main/java/seedu/address/logic/commands/ViewCommand.java
index 9ec7508d25b..20419b831e6 100644
--- a/src/main/java/seedu/address/logic/commands/ViewCommand.java
+++ b/src/main/java/seedu/address/logic/commands/ViewCommand.java
@@ -41,7 +41,7 @@ public class ViewCommand extends Command {
     /**
      * Construct the view command based on member id predicate.
      *
-     * @param predicate
+     * @param predicate the details keyword by id.
      */
     public ViewCommand(IdContainsKeywordsPredicate predicate) {
         this.predicate = predicate;
@@ -51,7 +51,7 @@ public ViewCommand(IdContainsKeywordsPredicate predicate) {
      * Overrides and executes the model.
      *
      * @param model {@code Model} which the command should operate on.
-     * @return CommandResult
+     * @return CommandResult related to View command.
      */
     @Override
     public CommandResult execute(Model model) {
@@ -62,9 +62,6 @@ public CommandResult execute(Model model) {
 
     /**
      * Override the equals method
-     *
-     * @param other
-     * @return boolean
      */
     @Override
     public boolean equals(Object other) {
diff --git a/src/main/java/seedu/address/logic/commands/exceptions/CommandException.java b/src/main/java/seedu/address/logic/commands/exceptions/CommandException.java
index c99e6a64bf0..ca1decfb4d8 100644
--- a/src/main/java/seedu/address/logic/commands/exceptions/CommandException.java
+++ b/src/main/java/seedu/address/logic/commands/exceptions/CommandException.java
@@ -9,8 +9,6 @@ public class CommandException extends Exception {
 
     /**
      * Constructs a new {@code CommandException} with the specified detail {@code message}.
-     *
-     * @param message
      */
     public CommandException(String message) {
         super(message);
@@ -18,9 +16,6 @@ public CommandException(String message) {
 
     /**
      * Constructs a new {@code CommandException} with the specified detail {@code message} and {@code cause}.
-     *
-     * @param message
-     * @param cause
      */
     public CommandException(String message, Throwable cause) {
         super(message, cause);

From 6307c3179f122e5def8f6a4faebc7c0dff853bd2 Mon Sep 17 00:00:00 2001
From: Zhang Zhiyao <zzy1007102679@gmail.com>
Date: Thu, 4 Nov 2021 23:40:52 +0800
Subject: [PATCH 5/5] javadoc update

---
 .../java/seedu/address/model/EzFoodie.java    |  2 +-
 .../seedu/address/model/account/Password.java |  3 --
 .../member/IdContainsKeywordsPredicate.java   |  4 +--
 .../seedu/address/model/member/Member.java    | 28 +++++++++----------
 ...strationDateContainsKeywordsPredicate.java | 10 ++-----
 .../model/member/UniqueMemberList.java        |  4 +--
 6 files changed, 19 insertions(+), 32 deletions(-)

diff --git a/src/main/java/seedu/address/model/EzFoodie.java b/src/main/java/seedu/address/model/EzFoodie.java
index 75ee5ca373a..3d727bba66d 100644
--- a/src/main/java/seedu/address/model/EzFoodie.java
+++ b/src/main/java/seedu/address/model/EzFoodie.java
@@ -121,7 +121,7 @@ public String toString() {
     /**
      * Overrides and gets member list.
      *
-     * @return ObservableList<Member> a series list data of members.
+     * @return ObservableList a series list data of members.
      */
     @Override
     public ObservableList<Member> getMemberList() {
diff --git a/src/main/java/seedu/address/model/account/Password.java b/src/main/java/seedu/address/model/account/Password.java
index 828ec5d3d90..4b5c2001c46 100644
--- a/src/main/java/seedu/address/model/account/Password.java
+++ b/src/main/java/seedu/address/model/account/Password.java
@@ -41,9 +41,6 @@ public Password(String password) {
         value = password;
     }
 
-    /**
-     * Returns true if a given string is a valid password.
-     */
     /**
      * Returns true if a given string is a valid password.
      *
diff --git a/src/main/java/seedu/address/model/member/IdContainsKeywordsPredicate.java b/src/main/java/seedu/address/model/member/IdContainsKeywordsPredicate.java
index ec0a8a418b6..43b407b04a2 100644
--- a/src/main/java/seedu/address/model/member/IdContainsKeywordsPredicate.java
+++ b/src/main/java/seedu/address/model/member/IdContainsKeywordsPredicate.java
@@ -12,9 +12,7 @@ public class IdContainsKeywordsPredicate implements Predicate<Member> {
     private final List<String> keywords;
 
     /**
-     * Constructs a {@code IdContainsKeywordsPredicate} with input {List<String>}.
-     *
-     * @param keywords
+     * Constructs a {@code IdContainsKeywordsPredicate} with input {@code List<String>}.
      */
     public IdContainsKeywordsPredicate(List<String> keywords) {
         this.keywords = keywords;
diff --git a/src/main/java/seedu/address/model/member/Member.java b/src/main/java/seedu/address/model/member/Member.java
index 7c580d479a6..f5f5f093b5c 100644
--- a/src/main/java/seedu/address/model/member/Member.java
+++ b/src/main/java/seedu/address/model/member/Member.java
@@ -36,24 +36,22 @@ public class Member {
     private final List<Transaction> transactions = new ArrayList<>();
     private final List<Reservation> reservations = new ArrayList<>();
 
-    /**
-     *
-     */
+
     /**
      * Constructs {code Member} with follow param.
      * Every field must be present and not null.
      *
-     * @param id
-     * @param name
-     * @param phone
-     * @param email
-     * @param address
-     * @param timestamp
-     * @param credit
-     * @param point
-     * @param transactions
-     * @param reservations
-     * @param tags
+     * @param id the member id
+     * @param name the member name
+     * @param phone the member phone
+     * @param email the member email
+     * @param address the member address
+     * @param timestamp the member timestamp
+     * @param credit the member credits
+     * @param point the member point
+     * @param transactions the member transactions
+     * @param reservations the member reservations
+     * @param tags the member tag
      */
 
     public Member(Id id, Name name, Phone phone, Email email, Address address,
@@ -149,7 +147,7 @@ public Point getPoint() {
      * Returns an immutable tag set, which throws {@code UnsupportedOperationException}
      * if modification is attempted.
      *
-     * @return Set<Tag>
+     * @return Set a series of tags
      */
     public Set<Tag> getTags() {
         return Collections.unmodifiableSet(tags);
diff --git a/src/main/java/seedu/address/model/member/RegistrationDateContainsKeywordsPredicate.java b/src/main/java/seedu/address/model/member/RegistrationDateContainsKeywordsPredicate.java
index a3763282037..ee1b5292bdf 100644
--- a/src/main/java/seedu/address/model/member/RegistrationDateContainsKeywordsPredicate.java
+++ b/src/main/java/seedu/address/model/member/RegistrationDateContainsKeywordsPredicate.java
@@ -20,7 +20,7 @@ public class RegistrationDateContainsKeywordsPredicate implements Predicate<Memb
     /**
      *  Constructs a {@code RegistrationDateContainsKeywordsPredicate} with input {@code List<String>}.
      *
-     * @param keywords
+     * @param keywords a list of string keywords
      */
     public RegistrationDateContainsKeywordsPredicate(List<String> keywords) {
         this.keywords = keywords;
@@ -28,9 +28,6 @@ public RegistrationDateContainsKeywordsPredicate(List<String> keywords) {
 
     /**
      * Overrides test method.
-     *
-     * @param member
-     * @return boolean
      */
     @Override
     public boolean test(Member member) {
@@ -46,9 +43,7 @@ public boolean test(Member member) {
     }
 
     /**
-     * Overrides equals method.
-     * 
-     * @return boolean
+     * Overrides the equals method.
      */
     @Override
     public boolean equals(Object other) {
@@ -56,5 +51,4 @@ public boolean equals(Object other) {
                 || (other instanceof RegistrationDateContainsKeywordsPredicate // instanceof handles nulls
                 && keywords.equals(((RegistrationDateContainsKeywordsPredicate) other).keywords)); // state check
     }
-
 }
diff --git a/src/main/java/seedu/address/model/member/UniqueMemberList.java b/src/main/java/seedu/address/model/member/UniqueMemberList.java
index 8376c63bea3..d115f660b4d 100644
--- a/src/main/java/seedu/address/model/member/UniqueMemberList.java
+++ b/src/main/java/seedu/address/model/member/UniqueMemberList.java
@@ -129,9 +129,9 @@ public void setMembers(List<Member> members) {
     }
 
     /**
-     * Returns the backing list as an unmodifiable {@code ObservableList}.
+     * Returns the backing list as an unmodifiable {@code ObservableList<Member>}.
      *
-     * @return ObservableList<Member>
+     * @return ObservableList a series of oberservation list
      */
     public ObservableList<Member> asUnmodifiableObservableList() {
         return internalUnmodifiableList;