diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 0000000..097f9f9
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1,9 @@
+#
+# https://help.github.com/articles/dealing-with-line-endings/
+#
+# Linux start script should use lf
+/gradlew        text eol=lf
+
+# These are Windows script files and should use crlf
+*.bat           text eol=crlf
+
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..228f79e
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,205 @@
+# Created by https://www.toptal.com/developers/gitignore/api/java,macos,intellij,gradle
+# Edit at https://www.toptal.com/developers/gitignore?templates=java,macos,intellij,gradle
+
+### Intellij ###
+# Covers JetBrains IDEs: IntelliJ, RubyMine, PhpStorm, AppCode, PyCharm, CLion, Android Studio, WebStorm and Rider
+# Reference: https://intellij-support.jetbrains.com/hc/en-us/articles/206544839
+
+# User-specific stuff
+.idea/**/workspace.xml
+.idea/**/tasks.xml
+.idea/**/usage.statistics.xml
+.idea/**/dictionaries
+.idea/**/shelf
+
+# AWS User-specific
+.idea/**/aws.xml
+
+# Generated files
+.idea/**/contentModel.xml
+
+# Sensitive or high-churn files
+.idea/**/dataSources/
+.idea/**/dataSources.ids
+.idea/**/dataSources.local.xml
+.idea/**/sqlDataSources.xml
+.idea/**/dynamic.xml
+.idea/**/uiDesigner.xml
+.idea/**/dbnavigator.xml
+
+# Gradle
+.idea/**/gradle.xml
+.idea/**/libraries
+
+# Gradle and Maven with auto-import
+# When using Gradle or Maven with auto-import, you should exclude module files,
+# since they will be recreated, and may cause churn.  Uncomment if using
+# auto-import.
+# .idea/artifacts
+# .idea/compiler.xml
+# .idea/jarRepositories.xml
+# .idea/modules.xml
+# .idea/*.iml
+# .idea/modules
+# *.iml
+# *.ipr
+
+# CMake
+cmake-build-*/
+
+# Mongo Explorer plugin
+.idea/**/mongoSettings.xml
+
+# File-based project format
+*.iws
+
+# IntelliJ
+out/
+
+# mpeltonen/sbt-idea plugin
+.idea_modules/
+
+# JIRA plugin
+atlassian-ide-plugin.xml
+
+# Cursive Clojure plugin
+.idea/replstate.xml
+
+# SonarLint plugin
+.idea/sonarlint/
+
+# Crashlytics plugin (for Android Studio and IntelliJ)
+com_crashlytics_export_strings.xml
+crashlytics.properties
+crashlytics-build.properties
+fabric.properties
+
+# Editor-based Rest Client
+.idea/httpRequests
+
+# Android studio 3.1+ serialized cache file
+.idea/caches/build_file_checksums.ser
+
+### Intellij Patch ###
+# Comment Reason: https://github.com/joeblau/gitignore.io/issues/186#issuecomment-215987721
+
+# *.iml
+# modules.xml
+# .idea/misc.xml
+# *.ipr
+
+# Sonarlint plugin
+# https://plugins.jetbrains.com/plugin/7973-sonarlint
+.idea/**/sonarlint/
+
+# SonarQube Plugin
+# https://plugins.jetbrains.com/plugin/7238-sonarqube-community-plugin
+.idea/**/sonarIssues.xml
+
+# Markdown Navigator plugin
+# https://plugins.jetbrains.com/plugin/7896-markdown-navigator-enhanced
+.idea/**/markdown-navigator.xml
+.idea/**/markdown-navigator-enh.xml
+.idea/**/markdown-navigator/
+
+# Cache file creation bug
+# See https://youtrack.jetbrains.com/issue/JBR-2257
+.idea/$CACHE_FILE$
+
+# CodeStream plugin
+# https://plugins.jetbrains.com/plugin/12206-codestream
+.idea/codestream.xml
+
+# Azure Toolkit for IntelliJ plugin
+# https://plugins.jetbrains.com/plugin/8053-azure-toolkit-for-intellij
+.idea/**/azureSettings.xml
+
+### Java ###
+# Compiled class file
+*.class
+
+# Log file
+*.log
+
+# BlueJ files
+*.ctxt
+
+# Mobile Tools for Java (J2ME)
+.mtj.tmp/
+
+# Package Files #
+*.jar
+*.war
+*.nar
+*.ear
+*.zip
+*.tar.gz
+*.rar
+
+# virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
+hs_err_pid*
+replay_pid*
+
+### macOS ###
+# General
+.DS_Store
+.AppleDouble
+.LSOverride
+
+# Icon must end with two \r
+Icon
+
+
+# Thumbnails
+._*
+
+# Files that might appear in the root of a volume
+.DocumentRevisions-V100
+.fseventsd
+.Spotlight-V100
+.TemporaryItems
+.Trashes
+.VolumeIcon.icns
+.com.apple.timemachine.donotpresent
+
+# Directories potentially created on remote AFP share
+.AppleDB
+.AppleDesktop
+Network Trash Folder
+Temporary Items
+.apdisk
+
+### macOS Patch ###
+# iCloud generated files
+*.icloud
+
+### Gradle ###
+.gradle
+**/build/
+!src/**/build/
+
+# Ignore Gradle GUI config
+gradle-app.setting
+
+# Avoid ignoring Gradle wrapper jar file (.jar files are usually ignored)
+!gradle-wrapper.jar
+
+# Avoid ignore Gradle wrappper properties
+!gradle-wrapper.properties
+
+# Cache of project
+.gradletasknamecache
+
+# Eclipse Gradle plugin generated files
+# Eclipse Core
+.project
+# JDT-specific (Eclipse Java Development Tools)
+.classpath
+
+### Gradle Patch ###
+# Java heap dump
+*.hprof
+
+.idea
+
+# End of https://www.toptal.com/developers/gitignore/api/java,macos,intellij,gradle
diff --git a/build.gradle b/build.gradle
new file mode 100644
index 0000000..5df6c9a
--- /dev/null
+++ b/build.gradle
@@ -0,0 +1,23 @@
+plugins {
+    id 'java'
+}
+
+group = 'meetcoder.study'
+version = '1.0.0'
+
+java {
+    sourceCompatibility = '17'
+}
+
+repositories {
+    mavenCentral()
+}
+
+dependencies {
+    testImplementation 'org.junit.jupiter:junit-jupiter:5.10.2'
+    testImplementation 'org.assertj:assertj-core:3.25.3'
+}
+
+test {
+    useJUnitPlatform()
+}
diff --git a/gradle/wrapper/gradle-wrapper.jar b/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 0000000..7f93135
Binary files /dev/null and b/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 0000000..ac72c34
--- /dev/null
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,7 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.3-bin.zip
+networkTimeout=10000
+validateDistributionUrl=true
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
diff --git a/gradlew b/gradlew
new file mode 100755
index 0000000..0adc8e1
--- /dev/null
+++ b/gradlew
@@ -0,0 +1,249 @@
+#!/bin/sh
+
+#
+# Copyright © 2015-2021 the original authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+##############################################################################
+#
+#   Gradle start up script for POSIX generated by Gradle.
+#
+#   Important for running:
+#
+#   (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is
+#       noncompliant, but you have some other compliant shell such as ksh or
+#       bash, then to run this script, type that shell name before the whole
+#       command line, like:
+#
+#           ksh Gradle
+#
+#       Busybox and similar reduced shells will NOT work, because this script
+#       requires all of these POSIX shell features:
+#         * functions;
+#         * expansions «$var», «${var}», «${var:-default}», «${var+SET}»,
+#           «${var#prefix}», «${var%suffix}», and «$( cmd )»;
+#         * compound commands having a testable exit status, especially «case»;
+#         * various built-in commands including «command», «set», and «ulimit».
+#
+#   Important for patching:
+#
+#   (2) This script targets any POSIX shell, so it avoids extensions provided
+#       by Bash, Ksh, etc; in particular arrays are avoided.
+#
+#       The "traditional" practice of packing multiple parameters into a
+#       space-separated string is a well documented source of bugs and security
+#       problems, so this is (mostly) avoided, by progressively accumulating
+#       options in "$@", and eventually passing that to Java.
+#
+#       Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS,
+#       and GRADLE_OPTS) rely on word-splitting, this is performed explicitly;
+#       see the in-line comments for details.
+#
+#       There are tweaks for specific operating systems such as AIX, CygWin,
+#       Darwin, MinGW, and NonStop.
+#
+#   (3) This script is generated from the Groovy template
+#       https://github.com/gradle/gradle/blob/HEAD/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
+#       within the Gradle project.
+#
+#       You can find Gradle at https://github.com/gradle/gradle/.
+#
+##############################################################################
+
+# Attempt to set APP_HOME
+
+# Resolve links: $0 may be a link
+app_path=$0
+
+# Need this for daisy-chained symlinks.
+while
+    APP_HOME=${app_path%"${app_path##*/}"}  # leaves a trailing /; empty if no leading path
+    [ -h "$app_path" ]
+do
+    ls=$( ls -ld "$app_path" )
+    link=${ls#*' -> '}
+    case $link in             #(
+      /*)   app_path=$link ;; #(
+      *)    app_path=$APP_HOME$link ;;
+    esac
+done
+
+# This is normally unused
+# shellcheck disable=SC2034
+APP_BASE_NAME=${0##*/}
+# Discard cd standard output in case $CDPATH is set (https://github.com/gradle/gradle/issues/25036)
+APP_HOME=$( cd "${APP_HOME:-./}" > /dev/null && pwd -P ) || exit
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD=maximum
+
+warn () {
+    echo "$*"
+} >&2
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+} >&2
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "$( uname )" in                #(
+  CYGWIN* )         cygwin=true  ;; #(
+  Darwin* )         darwin=true  ;; #(
+  MSYS* | MINGW* )  msys=true    ;; #(
+  NONSTOP* )        nonstop=true ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD=$JAVA_HOME/jre/sh/java
+    else
+        JAVACMD=$JAVA_HOME/bin/java
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD=java
+    if ! command -v java >/dev/null 2>&1
+    then
+        die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+fi
+
+# Increase the maximum file descriptors if we can.
+if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
+    case $MAX_FD in #(
+      max*)
+        # In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC3045
+        MAX_FD=$( ulimit -H -n ) ||
+            warn "Could not query maximum file descriptor limit"
+    esac
+    case $MAX_FD in  #(
+      '' | soft) :;; #(
+      *)
+        # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC3045
+        ulimit -n "$MAX_FD" ||
+            warn "Could not set maximum file descriptor limit to $MAX_FD"
+    esac
+fi
+
+# Collect all arguments for the java command, stacking in reverse order:
+#   * args from the command line
+#   * the main class name
+#   * -classpath
+#   * -D...appname settings
+#   * --module-path (only if needed)
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if "$cygwin" || "$msys" ; then
+    APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
+    CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
+
+    JAVACMD=$( cygpath --unix "$JAVACMD" )
+
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    for arg do
+        if
+            case $arg in                                #(
+              -*)   false ;;                            # don't mess with options #(
+              /?*)  t=${arg#/} t=/${t%%/*}              # looks like a POSIX filepath
+                    [ -e "$t" ] ;;                      #(
+              *)    false ;;
+            esac
+        then
+            arg=$( cygpath --path --ignore --mixed "$arg" )
+        fi
+        # Roll the args list around exactly as many times as the number of
+        # args, so each arg winds up back in the position where it started, but
+        # possibly modified.
+        #
+        # NB: a `for` loop captures its iteration list before it begins, so
+        # changing the positional parameters here affects neither the number of
+        # iterations, nor the values presented in `arg`.
+        shift                   # remove old arg
+        set -- "$@" "$arg"      # push replacement arg
+    done
+fi
+
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Collect all arguments for the java command;
+#   * $DEFAULT_JVM_OPTS, $JAVA_OPTS, and $GRADLE_OPTS can contain fragments of
+#     shell script including quotes and variable substitutions, so put them in
+#     double quotes to make sure that they get re-expanded; and
+#   * put everything else in single quotes, so that it's not re-expanded.
+
+set -- \
+        "-Dorg.gradle.appname=$APP_BASE_NAME" \
+        -classpath "$CLASSPATH" \
+        org.gradle.wrapper.GradleWrapperMain \
+        "$@"
+
+# Stop when "xargs" is not available.
+if ! command -v xargs >/dev/null 2>&1
+then
+    die "xargs is not available"
+fi
+
+# Use "xargs" to parse quoted args.
+#
+# With -n1 it outputs one arg per line, with the quotes and backslashes removed.
+#
+# In Bash we could simply go:
+#
+#   readarray ARGS < <( xargs -n1 <<<"$var" ) &&
+#   set -- "${ARGS[@]}" "$@"
+#
+# but POSIX shell has neither arrays nor command substitution, so instead we
+# post-process each arg (as a line of input to sed) to backslash-escape any
+# character that might be a shell metacharacter, then use eval to reverse
+# that process (while maintaining the separation between arguments), and wrap
+# the whole thing up as a single "set" statement.
+#
+# This will of course break if any of these variables contains a newline or
+# an unmatched quote.
+#
+
+eval "set -- $(
+        printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
+        xargs -n1 |
+        sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' |
+        tr '\n' ' '
+    )" '"$@"'
+
+exec "$JAVACMD" "$@"
diff --git a/gradlew.bat b/gradlew.bat
new file mode 100644
index 0000000..93e3f59
--- /dev/null
+++ b/gradlew.bat
@@ -0,0 +1,92 @@
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem      https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+
+@if "%DEBUG%"=="" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%"=="" set DIRNAME=.
+@rem This is normally unused
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if %ERRORLEVEL% equ 0 goto execute
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto execute
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*
+
+:end
+@rem End local scope for the variables with windows NT shell
+if %ERRORLEVEL% equ 0 goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+set EXIT_CODE=%ERRORLEVEL%
+if %EXIT_CODE% equ 0 set EXIT_CODE=1
+if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE%
+exit /b %EXIT_CODE%
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega
diff --git a/settings.gradle b/settings.gradle
new file mode 100644
index 0000000..8554d5e
--- /dev/null
+++ b/settings.gradle
@@ -0,0 +1,14 @@
+/*
+ * This file was generated by the Gradle 'init' task.
+ *
+ * The settings file is used to specify which projects to include in your build.
+ * For more detailed information on multi-project builds, please refer to https://docs.gradle.org/8.3/userguide/building_swift_projects.html in the Gradle documentation.
+ */
+
+plugins {
+    // Apply the foojay-resolver plugin to allow automatic download of JDKs
+    id 'org.gradle.toolchains.foojay-resolver-convention' version '0.4.0'
+}
+
+rootProject.name = 'java-baseball'
+include('app')
diff --git a/src/main/java/meetcoder/study/App.java b/src/main/java/meetcoder/study/App.java
new file mode 100644
index 0000000..d9806d0
--- /dev/null
+++ b/src/main/java/meetcoder/study/App.java
@@ -0,0 +1,13 @@
+package meetcoder.study;
+
+import meetcoder.study.core.BaseballApplication;
+import meetcoder.study.core.console.ConsoleBaseballApplication;
+
+public class App {
+
+    public static void main(String[] args) {
+        BaseballApplication application = new ConsoleBaseballApplication();
+        application.run();
+    }
+
+}
diff --git a/src/main/java/meetcoder/study/core/BaseballApplication.java b/src/main/java/meetcoder/study/core/BaseballApplication.java
new file mode 100644
index 0000000..3ec2a2e
--- /dev/null
+++ b/src/main/java/meetcoder/study/core/BaseballApplication.java
@@ -0,0 +1,9 @@
+package meetcoder.study.core;
+
+public interface BaseballApplication {
+
+    void run();
+
+    void exit();
+
+}
diff --git a/src/main/java/meetcoder/study/core/BaseballGame.java b/src/main/java/meetcoder/study/core/BaseballGame.java
new file mode 100644
index 0000000..a9a6c70
--- /dev/null
+++ b/src/main/java/meetcoder/study/core/BaseballGame.java
@@ -0,0 +1,7 @@
+package meetcoder.study.core;
+
+public interface BaseballGame {
+
+    void play();
+
+}
diff --git a/src/main/java/meetcoder/study/core/command/Command.java b/src/main/java/meetcoder/study/core/command/Command.java
new file mode 100644
index 0000000..7bfb9ef
--- /dev/null
+++ b/src/main/java/meetcoder/study/core/command/Command.java
@@ -0,0 +1,7 @@
+package meetcoder.study.core.command;
+
+public interface Command {
+
+    void excute();
+
+}
diff --git a/src/main/java/meetcoder/study/core/command/CommandFactory.java b/src/main/java/meetcoder/study/core/command/CommandFactory.java
new file mode 100644
index 0000000..26493a8
--- /dev/null
+++ b/src/main/java/meetcoder/study/core/command/CommandFactory.java
@@ -0,0 +1,22 @@
+package meetcoder.study.core.command;
+
+import java.util.HashMap;
+import java.util.Map;
+
+public class CommandFactory {
+
+    private final Map<String, Command> commandMap;
+
+    public CommandFactory(Map<String, Command> commandMap) {
+        this.commandMap = new HashMap<>(commandMap);
+    }
+
+    public Command getCommand(String key) {
+        if (commandMap.containsKey(key)) {
+            return commandMap.get(key);
+        }
+
+        throw new IllegalArgumentException("존재하지 않는 명령어입니다.");
+    }
+
+}
diff --git a/src/main/java/meetcoder/study/core/command/ExitApplicationCommand.java b/src/main/java/meetcoder/study/core/command/ExitApplicationCommand.java
new file mode 100644
index 0000000..8b016ed
--- /dev/null
+++ b/src/main/java/meetcoder/study/core/command/ExitApplicationCommand.java
@@ -0,0 +1,18 @@
+package meetcoder.study.core.command;
+
+import meetcoder.study.core.BaseballApplication;
+
+public class ExitApplicationCommand implements Command {
+
+    private final BaseballApplication application;
+
+    public ExitApplicationCommand(BaseballApplication application) {
+        this.application = application;
+    }
+
+    @Override
+    public void excute() {
+        application.exit();
+    }
+
+}
diff --git a/src/main/java/meetcoder/study/core/command/PlayGameCommand.java b/src/main/java/meetcoder/study/core/command/PlayGameCommand.java
new file mode 100644
index 0000000..a9f5524
--- /dev/null
+++ b/src/main/java/meetcoder/study/core/command/PlayGameCommand.java
@@ -0,0 +1,18 @@
+package meetcoder.study.core.command;
+
+import meetcoder.study.core.BaseballGame;
+
+public class PlayGameCommand implements Command {
+
+    private final BaseballGame game;
+
+    public PlayGameCommand(BaseballGame game) {
+        this.game = game;
+    }
+
+    @Override
+    public void excute() {
+        game.play();
+    }
+
+}
diff --git a/src/main/java/meetcoder/study/core/console/ConsoleBaseballApplication.java b/src/main/java/meetcoder/study/core/console/ConsoleBaseballApplication.java
new file mode 100644
index 0000000..19599ae
--- /dev/null
+++ b/src/main/java/meetcoder/study/core/console/ConsoleBaseballApplication.java
@@ -0,0 +1,57 @@
+package meetcoder.study.core.console;
+
+import java.util.Map;
+import meetcoder.study.core.BaseballApplication;
+import meetcoder.study.core.command.Command;
+import meetcoder.study.core.command.CommandFactory;
+import meetcoder.study.core.command.ExitApplicationCommand;
+import meetcoder.study.core.command.PlayGameCommand;
+import meetcoder.study.service.RandomBallNumbersGenerator;
+import meetcoder.study.view.ConsoleInputView;
+import meetcoder.study.view.ConsoleOutputView;
+
+public class ConsoleBaseballApplication implements BaseballApplication {
+
+    private final ConsoleInputView inputView;
+    private final ConsoleOutputView outputView;
+    private final CommandFactory commandFactory;
+    private boolean isRunning;
+
+    public ConsoleBaseballApplication() {
+        this.inputView = new ConsoleInputView();
+        this.outputView = new ConsoleOutputView();
+        this.commandFactory = new CommandFactory(
+            Map.of(
+                "1", new PlayGameCommand(
+                    new ConsoleBaseballGame(
+                        inputView, outputView, new RandomBallNumbersGenerator())),
+                "9", new ExitApplicationCommand(this)
+            )
+        );
+    }
+
+    @Override
+    public void run() {
+        isRunning = true;
+        while (isRunning) {
+            processCommand();
+        }
+    }
+
+    @Override
+    public void exit() {
+        outputView.displayGoodbyeMessage();
+        isRunning = false;
+    }
+
+    private void processCommand() {
+        try {
+            outputView.displayManual();
+            Command command = inputView.getCommand(commandFactory);
+            command.excute();
+        } catch (Exception ex) {
+            outputView.displayError(ex);
+        }
+    }
+
+}
diff --git a/src/main/java/meetcoder/study/core/console/ConsoleBaseballGame.java b/src/main/java/meetcoder/study/core/console/ConsoleBaseballGame.java
new file mode 100644
index 0000000..48821c8
--- /dev/null
+++ b/src/main/java/meetcoder/study/core/console/ConsoleBaseballGame.java
@@ -0,0 +1,56 @@
+package meetcoder.study.core.console;
+
+import meetcoder.study.core.BaseballGame;
+import meetcoder.study.model.BallNumbers;
+import meetcoder.study.model.BaseballGuessResult;
+import meetcoder.study.service.BallNumbersGenerator;
+import meetcoder.study.view.ConsoleInputView;
+import meetcoder.study.view.ConsoleOutputView;
+
+public class ConsoleBaseballGame implements BaseballGame {
+
+    private final ConsoleInputView inputView;
+    private final ConsoleOutputView outputView;
+    private final BallNumbersGenerator ballNumbersGenerator;
+    private BallNumbers targetNumbers;
+    private boolean isRunning;
+
+    public ConsoleBaseballGame(
+        ConsoleInputView inputView, ConsoleOutputView outputView,
+        BallNumbersGenerator ballNumbersGenerator
+    ) {
+        this.inputView = inputView;
+        this.outputView = outputView;
+        this.ballNumbersGenerator = ballNumbersGenerator;
+    }
+
+    @Override
+    public void play() {
+        isRunning = true;
+        targetNumbers = ballNumbersGenerator.generate();
+        outputView.displaySetUpComplete();
+        while (isRunning) {
+            guess();
+        }
+    }
+
+    private void guess() {
+        try {
+            outputView.displayNumberInputRequest();
+            BallNumbers guessedNumbers = inputView.readBaseballNumber();
+            BaseballGuessResult result = targetNumbers.evaluateGuess(guessedNumbers);
+            outputView.printBaseballResult(result);
+            if (result.isAllStrike()) {
+                end();
+            }
+        } catch (Exception ex) {
+            outputView.displayError(ex);
+        }
+    }
+
+    private void end() {
+        outputView.displayGameOver();
+        isRunning = false;
+    }
+
+}
diff --git a/src/main/java/meetcoder/study/model/BallNumber.java b/src/main/java/meetcoder/study/model/BallNumber.java
new file mode 100644
index 0000000..5c1fb11
--- /dev/null
+++ b/src/main/java/meetcoder/study/model/BallNumber.java
@@ -0,0 +1,42 @@
+package meetcoder.study.model;
+
+import static meetcoder.study.util.Validator.checkArgument;
+
+import java.util.Objects;
+
+public class BallNumber {
+
+    public static final int MIN_BALL_NUMBER = 1;
+    public static final int MAX_BALL_NUMBER = 9;
+    private final int number;
+
+    private BallNumber(int number) {
+        this.number = number;
+    }
+
+    public static BallNumber of(int number) {
+        checkArgument(
+            number >= MIN_BALL_NUMBER && number <= MAX_BALL_NUMBER,
+            "BallNumber은 " + MIN_BALL_NUMBER + "~" + MAX_BALL_NUMBER + "사이의 숫자여야 합니다."
+        );
+        return new BallNumber(number);
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+        BallNumber that = (BallNumber) o;
+        return number == that.number;
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(number);
+    }
+
+}
diff --git a/src/main/java/meetcoder/study/model/BallNumbers.java b/src/main/java/meetcoder/study/model/BallNumbers.java
new file mode 100644
index 0000000..8e976b4
--- /dev/null
+++ b/src/main/java/meetcoder/study/model/BallNumbers.java
@@ -0,0 +1,75 @@
+package meetcoder.study.model;
+
+import static meetcoder.study.model.BallNumber.MAX_BALL_NUMBER;
+import static meetcoder.study.model.BallNumber.MIN_BALL_NUMBER;
+import static meetcoder.study.util.Validator.checkArgument;
+
+import java.util.List;
+import java.util.Objects;
+
+public class BallNumbers {
+
+    public static final int BALL_NUMBERS_SIZE = 3;
+    private final List<BallNumber> numbers;
+
+    private BallNumbers(List<Integer> numbers) {
+        validate(numbers);
+        this.numbers = numbers.stream()
+            .map(BallNumber::of)
+            .toList();
+    }
+
+    public static BallNumbers of(List<Integer> numbers) {
+        return new BallNumbers(numbers);
+    }
+
+    public BaseballGuessResult evaluateGuess(BallNumbers guessedNumber) {
+        int strike = 0;
+        int ball = 0;
+
+        for (int i = 0; i < BALL_NUMBERS_SIZE; i++) {
+            GuessResultType result = evaluateSingleGuess(guessedNumber.numbers.get(i), i);
+            if (Objects.equals(result, GuessResultType.STRIKE)) {
+                strike++;
+            } else if (Objects.equals(result, GuessResultType.BALL)) {
+                ball++;
+            }
+        }
+
+        return new BaseballGuessResult(strike, ball);
+    }
+
+    private GuessResultType evaluateSingleGuess(BallNumber number, int position) {
+        if (isStrike(number, position)) {
+            return GuessResultType.STRIKE;
+        }
+
+        if (isBall(number, position)) {
+            return GuessResultType.BALL;
+        }
+
+        return GuessResultType.NOTHING;
+    }
+
+    private boolean isStrike(BallNumber number, int position) {
+        return position < BALL_NUMBERS_SIZE && numbers.get(position)
+            .equals(number);
+    }
+
+    private boolean isBall(BallNumber number, int position) {
+        return !isStrike(number, position) && numbers.contains(number);
+    }
+
+    private void validate(List<Integer> numbers) {
+        long count = numbers.stream()
+            .distinct()
+            .count();
+
+        checkArgument(
+            count == BALL_NUMBERS_SIZE,
+            "야구 숫자는 " + MIN_BALL_NUMBER + "~" + MAX_BALL_NUMBER + "사이의 서로 다른 " + BALL_NUMBERS_SIZE
+                + "자리 숫자여야 합니다."
+        );
+    }
+
+}
diff --git a/src/main/java/meetcoder/study/model/BaseballGuessResult.java b/src/main/java/meetcoder/study/model/BaseballGuessResult.java
new file mode 100644
index 0000000..5ed1a53
--- /dev/null
+++ b/src/main/java/meetcoder/study/model/BaseballGuessResult.java
@@ -0,0 +1,50 @@
+package meetcoder.study.model;
+
+import static meetcoder.study.model.BallNumbers.BALL_NUMBERS_SIZE;
+import static meetcoder.study.model.GuessResultType.BALL;
+import static meetcoder.study.model.GuessResultType.NOTHING;
+import static meetcoder.study.model.GuessResultType.STRIKE;
+
+public record BaseballGuessResult(
+    int strikeCount,
+    int ballCount
+) {
+
+    public boolean isAllStrike() {
+        return strikeCount == BALL_NUMBERS_SIZE;
+    }
+
+    public String summary() {
+        if (isNothing()) {
+            return NOTHING.getName();
+        }
+
+        StringBuilder sb = new StringBuilder();
+        if (hasBall()) {
+            sb.append(ballCount)
+                .append(BALL.getName())
+                .append(" ");
+        }
+
+        if (hasStrike()) {
+            sb.append(strikeCount)
+                .append(STRIKE.getName());
+        }
+
+        return sb.toString()
+            .trim();
+    }
+
+    private boolean isNothing() {
+        return strikeCount == 0 && ballCount == 0;
+    }
+
+    private boolean hasStrike() {
+        return strikeCount > 0;
+    }
+
+    private boolean hasBall() {
+        return ballCount > 0;
+    }
+
+}
diff --git a/src/main/java/meetcoder/study/model/GuessResultType.java b/src/main/java/meetcoder/study/model/GuessResultType.java
new file mode 100644
index 0000000..d1d77d4
--- /dev/null
+++ b/src/main/java/meetcoder/study/model/GuessResultType.java
@@ -0,0 +1,17 @@
+package meetcoder.study.model;
+
+public enum GuessResultType {
+    NOTHING("낫싱"),
+    STRIKE("스트라이크"),
+    BALL("볼");
+
+    private final String name;
+
+    GuessResultType(String name) {
+        this.name = name;
+    }
+
+    public String getName() {
+        return name;
+    }
+}
diff --git a/src/main/java/meetcoder/study/service/BallNumbersGenerator.java b/src/main/java/meetcoder/study/service/BallNumbersGenerator.java
new file mode 100644
index 0000000..17a1c41
--- /dev/null
+++ b/src/main/java/meetcoder/study/service/BallNumbersGenerator.java
@@ -0,0 +1,9 @@
+package meetcoder.study.service;
+
+import meetcoder.study.model.BallNumbers;
+
+public interface BallNumbersGenerator {
+
+    BallNumbers generate();
+
+}
diff --git a/src/main/java/meetcoder/study/service/RandomBallNumbersGenerator.java b/src/main/java/meetcoder/study/service/RandomBallNumbersGenerator.java
new file mode 100644
index 0000000..468cb98
--- /dev/null
+++ b/src/main/java/meetcoder/study/service/RandomBallNumbersGenerator.java
@@ -0,0 +1,33 @@
+package meetcoder.study.service;
+
+import static meetcoder.study.model.BallNumber.MAX_BALL_NUMBER;
+import static meetcoder.study.model.BallNumber.MIN_BALL_NUMBER;
+import static meetcoder.study.model.BallNumbers.BALL_NUMBERS_SIZE;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+import meetcoder.study.model.BallNumbers;
+
+public class RandomBallNumbersGenerator implements BallNumbersGenerator {
+
+    @Override
+    public BallNumbers generate() {
+        List<Integer> numbers = createNumberRange(MIN_BALL_NUMBER, MAX_BALL_NUMBER);
+        Collections.shuffle(numbers);
+
+        return BallNumbers.of(
+            new ArrayList<>(numbers.subList(0, BALL_NUMBERS_SIZE)));
+    }
+
+    private List<Integer> createNumberRange(int min, int max) {
+        List<Integer> numbers = new ArrayList<>();
+
+        for (int i = min; i <= max; i++) {
+            numbers.add(i);
+        }
+
+        return numbers;
+    }
+
+}
diff --git a/src/main/java/meetcoder/study/util/Validator.java b/src/main/java/meetcoder/study/util/Validator.java
new file mode 100644
index 0000000..784fe70
--- /dev/null
+++ b/src/main/java/meetcoder/study/util/Validator.java
@@ -0,0 +1,15 @@
+package meetcoder.study.util;
+
+public final class Validator {
+
+    private Validator() {
+        // 유틸리티 클래스
+    }
+
+    public static void checkArgument(boolean expression, String message) {
+        if (!expression) {
+            throw new IllegalArgumentException(message);
+        }
+    }
+
+}
diff --git a/src/main/java/meetcoder/study/view/ConsoleInputView.java b/src/main/java/meetcoder/study/view/ConsoleInputView.java
new file mode 100644
index 0000000..f7f4ac1
--- /dev/null
+++ b/src/main/java/meetcoder/study/view/ConsoleInputView.java
@@ -0,0 +1,43 @@
+package meetcoder.study.view;
+
+import java.io.BufferedReader;
+import java.io.InputStreamReader;
+import java.util.List;
+import meetcoder.study.core.command.Command;
+import meetcoder.study.core.command.CommandFactory;
+import meetcoder.study.model.BallNumbers;
+
+public class ConsoleInputView {
+
+    private static final BufferedReader reader = new BufferedReader(
+        new InputStreamReader(System.in));
+
+    public Command getCommand(CommandFactory commandFactory) {
+        return commandFactory.getCommand(readString());
+    }
+
+    public BallNumbers readBaseballNumber() {
+        return BallNumbers.of(readInts());
+    }
+
+    private String readString() {
+        try {
+            return reader.readLine();
+        } catch (Exception e) {
+            throw new IllegalArgumentException("입력값을 읽을 수 없습니다.");
+        }
+    }
+
+    private List<Integer> readInts() {
+        try {
+            return readString().chars()
+                .boxed()
+                .map(Character::getNumericValue)
+                .toList();
+        } catch (Exception e) {
+            throw new IllegalArgumentException("숫자를 입력해주세요.");
+        }
+    }
+
+
+}
diff --git a/src/main/java/meetcoder/study/view/ConsoleMessage.java b/src/main/java/meetcoder/study/view/ConsoleMessage.java
new file mode 100644
index 0000000..1c8e556
--- /dev/null
+++ b/src/main/java/meetcoder/study/view/ConsoleMessage.java
@@ -0,0 +1,22 @@
+package meetcoder.study.view;
+
+import static meetcoder.study.model.BallNumbers.BALL_NUMBERS_SIZE;
+
+final class ConsoleMessage {
+
+    /**
+     * 어플리케이션
+     */
+    static final String COMMAND_DESCRIPTION = "게임을 새로 시작하려면 1, 종료하려면 9를 입력하세요.";
+    static final String GOOD_BYE_MESSAGE = "애플리케이션이 종료되었습니다.";
+
+    /**
+     * 야구 게임
+     */
+    static final String SETUP_MESSAGE = "컴퓨터가 숫자를 뽑았습니다.";
+    static final String NUMBER_INPUT_MESSAGE = "숫자를 입력해주세요";
+    static final String CLEAR_MESSAGE =
+        BALL_NUMBERS_SIZE + "개의 숫자를 모두 맞히셨습니다.";
+    static final String END_MESSAGE = "게임 종료";
+
+}
diff --git a/src/main/java/meetcoder/study/view/ConsoleOutputView.java b/src/main/java/meetcoder/study/view/ConsoleOutputView.java
new file mode 100644
index 0000000..2a032b8
--- /dev/null
+++ b/src/main/java/meetcoder/study/view/ConsoleOutputView.java
@@ -0,0 +1,64 @@
+package meetcoder.study.view;
+
+import static meetcoder.study.view.ConsoleMessage.CLEAR_MESSAGE;
+import static meetcoder.study.view.ConsoleMessage.COMMAND_DESCRIPTION;
+import static meetcoder.study.view.ConsoleMessage.END_MESSAGE;
+import static meetcoder.study.view.ConsoleMessage.GOOD_BYE_MESSAGE;
+import static meetcoder.study.view.ConsoleMessage.NUMBER_INPUT_MESSAGE;
+import static meetcoder.study.view.ConsoleMessage.SETUP_MESSAGE;
+
+import meetcoder.study.model.BaseballGuessResult;
+
+public class ConsoleOutputView {
+
+    public void displayManual() {
+        println(COMMAND_DESCRIPTION);
+    }
+
+    public void displayError(Exception ex) {
+        println("⚠️" + ex.getMessage());
+    }
+
+    public void displayGoodbyeMessage() {
+        emptyLine();
+        println(GOOD_BYE_MESSAGE);
+    }
+
+    public void displaySetUpComplete() {
+        emptyLine();
+        println(SETUP_MESSAGE);
+        emptyLine();
+    }
+
+    public void displayNumberInputRequest() {
+        print(NUMBER_INPUT_MESSAGE + " : ");
+    }
+
+    public void displayGameOver() {
+        emptyLine();
+        println(CLEAR_MESSAGE);
+        printWithDashLine(END_MESSAGE);
+        emptyLine();
+    }
+
+    public void printBaseballResult(BaseballGuessResult result) {
+        println(result.summary());
+    }
+
+    private void println(String message) {
+        System.out.println(message);
+    }
+
+    private void print(String message) {
+        System.out.print(message);
+    }
+
+    public void printWithDashLine(String message) {
+        System.out.println("-------" + message + "-------");
+    }
+
+    private void emptyLine() {
+        System.out.println();
+    }
+
+}
diff --git a/src/test/java/meetcoder/study/core/command/CommandFactoryTest.java b/src/test/java/meetcoder/study/core/command/CommandFactoryTest.java
new file mode 100644
index 0000000..c8f9610
--- /dev/null
+++ b/src/test/java/meetcoder/study/core/command/CommandFactoryTest.java
@@ -0,0 +1,46 @@
+package meetcoder.study.core.command;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.assertj.core.api.Assertions.assertThatIllegalArgumentException;
+
+import java.util.HashMap;
+import java.util.Map;
+import org.assertj.core.api.ThrowableAssert.ThrowingCallable;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+
+class CommandFactoryTest {
+
+    @DisplayName("유효한 키로 Command를 가져올 수 있다.")
+    @Test
+    void shouldReturnCommandForValidKey() {
+        // given
+        String key = "key";
+        Command mockCommand = () -> {
+        };
+        CommandFactory commandFactory = new CommandFactory(Map.of(key, mockCommand));
+
+        // when
+        Command command = commandFactory.getCommand(key);
+
+        // then
+        assertThat(command).isEqualTo(mockCommand);
+    }
+
+    @DisplayName("존재하지 않는 키로 Command를를 가져오려고 하면 예외가 발생한다.")
+    @Test
+    void shouldThrowExceptionForInvalidKey() {
+        // given
+        CommandFactory commandFactory = new CommandFactory(new HashMap<>());
+
+        // when
+        ThrowingCallable getCommand = () -> commandFactory.getCommand("invalidKey");
+
+        // when & then
+        assertThatIllegalArgumentException()
+            .isThrownBy(getCommand)
+            .withMessage("존재하지 않는 명령어입니다.");
+    }
+
+
+}
diff --git a/src/test/java/meetcoder/study/model/BallNumberTest.java b/src/test/java/meetcoder/study/model/BallNumberTest.java
new file mode 100644
index 0000000..b573c89
--- /dev/null
+++ b/src/test/java/meetcoder/study/model/BallNumberTest.java
@@ -0,0 +1,55 @@
+package meetcoder.study.model;
+
+import static org.assertj.core.api.Assertions.assertThatIllegalArgumentException;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+import org.assertj.core.api.ThrowableAssert.ThrowingCallable;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.ValueSource;
+
+class BallNumberTest {
+
+    @DisplayName("1~9 사이의 숫자로 BallNumber를 생성한다.")
+    @ParameterizedTest
+    @ValueSource(ints = {1, 2, 3, 4, 5, 6, 7, 8, 9})
+    void shouldCreateBallNumberWithValidNumber(int number) {
+        // when
+        BallNumber created = BallNumber.of(number);
+
+        // then
+        assertNotNull(created);
+    }
+
+    @DisplayName("1~9 사이의 숫자가 아닌 경우, BallNumber를 생성할 수 없다.")
+    @ParameterizedTest
+    @ValueSource(ints = {-1, 0, 10})
+    void shouldThrowExceptionWhenNumberIsOutOfRange(int invalidNumber) {
+        // given
+
+        // when
+        ThrowingCallable of = () -> BallNumber.of(invalidNumber);
+
+        // then
+        assertThatIllegalArgumentException()
+            .isThrownBy(of)
+            .withMessage("BallNumber은 1~9사이의 숫자여야 합니다.");
+    }
+
+    @DisplayName("같은 숫자를 가진 BallNumber는 동등한 객체이다.")
+    @Test
+    void ballNumbersWithSameValueShouldBeEqual() {
+        // given
+        BallNumber ballNumber1 = BallNumber.of(1);
+        BallNumber ballNumber2 = BallNumber.of(1);
+
+        // when
+        boolean isEqual = ballNumber1.equals(ballNumber2);
+
+        // then
+        assertTrue(isEqual);
+    }
+
+}
diff --git a/src/test/java/meetcoder/study/model/BallNumbersTest.java b/src/test/java/meetcoder/study/model/BallNumbersTest.java
new file mode 100644
index 0000000..5b8269d
--- /dev/null
+++ b/src/test/java/meetcoder/study/model/BallNumbersTest.java
@@ -0,0 +1,111 @@
+package meetcoder.study.model;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.assertj.core.api.Assertions.assertThatIllegalArgumentException;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+import java.util.List;
+import org.assertj.core.api.ThrowableAssert.ThrowingCallable;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+
+class BallNumbersTest {
+
+    @DisplayName("1 ~ 9사이의 서로 다른 3개의 숫자로 BallNumbers를 생성한다.")
+    @Test
+    void shouldCreateBallNumbersWithValidNumbers() {
+        // when
+        BallNumbers created = BallNumbers.of(List.of(1, 2, 3));
+
+        // then
+        assertNotNull(created);
+    }
+
+    @DisplayName("1 ~ 9사이의 숫자가 아닌 경우, BallNumbers를 생성할 수 없다.")
+    @Test
+    void shouldThrowExceptionWhenNumbersAreOutOfRange() {
+        // when
+        ThrowingCallable of = () -> BallNumbers.of(List.of(1, 2, 10));
+
+        // then
+        assertThatIllegalArgumentException()
+            .isThrownBy(of)
+            .withMessage("BallNumber은 1~9사이의 숫자여야 합니다.");
+    }
+
+    @DisplayName("중복된 숫자가 있는 경우, BallNumbers를 생성할 수 없다.")
+    @Test
+    void shouldThrowExceptionWhenNumbersAreDuplicated() {
+        // when
+        ThrowingCallable of = () -> BallNumbers.of(List.of(1, 1, 2));
+
+        // then
+        assertThatIllegalArgumentException()
+            .isThrownBy(of)
+            .withMessage("야구 숫자는 1~9사이의 서로 다른 3자리 숫자여야 합니다.");
+    }
+
+    @DisplayName("BallNumbers가 가지고 있는 숫자를 추측하여, 추측 결과를 확인한다. (Case. 3스트라이크)")
+    @Test
+    void shouldReturnThreeStrikesWhenAllNumbersAndPositionsMatch() {
+        // given
+        BallNumbers target = BallNumbers.of(List.of(1, 2, 3));
+        BallNumbers guessedNumber = BallNumbers.of(List.of(1, 2, 3));
+
+        // when
+        BaseballGuessResult result = target.evaluateGuess(guessedNumber);
+
+        // then
+        assertTrue(result.isAllStrike());
+        assertThat(result.ballCount()).isEqualTo(0);
+        assertThat(result.strikeCount()).isEqualTo(3);
+    }
+
+    @DisplayName("BallNumbers가 가지고 있는 숫자를 추측하여, 추측 결과를 확인한다.(Case. 3볼)")
+    @Test
+    void shouldReturnThreeBallsWhenAllNumbersMatchButPositionsDoNot() {
+        // given
+        BallNumbers target = BallNumbers.of(List.of(1, 2, 3));
+        BallNumbers guessedNumber = BallNumbers.of(List.of(3, 1, 2));
+
+        // when
+        BaseballGuessResult result = target.evaluateGuess(guessedNumber);
+
+        // then
+        assertThat(result.ballCount()).isEqualTo(3);
+        assertThat(result.strikeCount()).isEqualTo(0);
+    }
+
+    @DisplayName("BallNumbers가 가지고 있는 숫자를 추측하여, 추측 결과를 확인한다.(Case. 2볼 1스트라이크)")
+    @Test
+    void shouldReturnTwoBallsAndOneStrikeWhenTwoNumbersMatchButOnlyOnePositionMatches() {
+        // given
+        BallNumbers target = BallNumbers.of(List.of(1, 2, 3));
+        BallNumbers guessedNumber = BallNumbers.of(List.of(1, 3, 2));
+
+        // when
+        BaseballGuessResult result = target.evaluateGuess(guessedNumber);
+
+        // then
+        assertThat(result.ballCount()).isEqualTo(2);
+        assertThat(result.strikeCount()).isEqualTo(1);
+    }
+
+    @DisplayName("BallNumbers가 가지고 있는 숫자를 추측하여, 추측 결과를 확인한다.(Case. 낫싱)")
+    @Test
+    void shouldReturnNothingWhenNoNumbersMatch() {
+        // given
+        BallNumbers target = BallNumbers.of(List.of(1, 2, 3));
+        BallNumbers guessedNumber = BallNumbers.of(List.of(4, 5, 6));
+
+        // when
+        BaseballGuessResult result = target.evaluateGuess(guessedNumber);
+
+        // then
+        assertThat(result.ballCount()).isEqualTo(0);
+        assertThat(result.strikeCount()).isEqualTo(0);
+    }
+
+
+}
diff --git a/src/test/java/meetcoder/study/model/BaseballGuessResultTest.java b/src/test/java/meetcoder/study/model/BaseballGuessResultTest.java
new file mode 100644
index 0000000..f8f35ef
--- /dev/null
+++ b/src/test/java/meetcoder/study/model/BaseballGuessResultTest.java
@@ -0,0 +1,31 @@
+package meetcoder.study.model;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+
+class BaseballGuessResultTest {
+
+    @DisplayName("스트라이크 수가 3개인 경우, isAllStrike가 true이다.")
+    @Test
+    void shouldReturnTrueWhenAllThreeAreStrikes() {
+        // when
+        BaseballGuessResult result = new BaseballGuessResult(3, 0);
+
+        // then
+        assertTrue(result.isAllStrike());
+    }
+
+    @DisplayName("추측 결과를 요약한다.")
+    @Test
+    void shouldSummarizeGuessResultCorrectly() {
+        // when
+        BaseballGuessResult result = new BaseballGuessResult(1, 2);
+
+        // then
+        assertEquals(result.summary(), "2볼 1스트라이크");
+    }
+
+}
diff --git a/src/test/java/meetcoder/study/service/RandomBallNumbersGeneratorTest.java b/src/test/java/meetcoder/study/service/RandomBallNumbersGeneratorTest.java
new file mode 100644
index 0000000..f0632ef
--- /dev/null
+++ b/src/test/java/meetcoder/study/service/RandomBallNumbersGeneratorTest.java
@@ -0,0 +1,29 @@
+package meetcoder.study.service;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+import meetcoder.study.model.BallNumbers;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+
+class RandomBallNumbersGeneratorTest {
+
+    RandomBallNumbersGenerator randomBallNumbersGenerator;
+
+    @BeforeEach
+    void setUp() {
+        randomBallNumbersGenerator = new RandomBallNumbersGenerator();
+    }
+
+    @DisplayName("랜덤으로 생성된 BallNumbers를 반환한다.")
+    @Test
+    void generateBallNumbersRandomly() {
+        // when
+        BallNumbers generated = randomBallNumbersGenerator.generate();
+
+        // then
+        assertThat(generated).isNotNull();
+    }
+
+}
diff --git a/src/test/java/meetcoder/study/util/ValidatorTest.java b/src/test/java/meetcoder/study/util/ValidatorTest.java
new file mode 100644
index 0000000..831892d
--- /dev/null
+++ b/src/test/java/meetcoder/study/util/ValidatorTest.java
@@ -0,0 +1,34 @@
+package meetcoder.study.util;
+
+import static org.assertj.core.api.Assertions.assertThatIllegalArgumentException;
+import static org.junit.jupiter.api.Assertions.assertDoesNotThrow;
+
+import org.assertj.core.api.ThrowableAssert.ThrowingCallable;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+
+class ValidatorTest {
+
+    @DisplayName("표현식이 true인 경우, 예외가 발생하지 않는다.")
+    @Test
+    void checkArgumentTrue() {
+        // then
+        assertDoesNotThrow(() -> Validator.checkArgument(true, "예외가 발생하면 안됩니다."));
+    }
+
+    @DisplayName("표현식이 false인 경우, 예외가 발생한다.")
+    @Test
+    void checkArgumentFalse() {
+        // given
+        String errorMessage = "예외가 발생해야 합니다.";
+
+        // when
+        ThrowingCallable checkArgument = () -> Validator.checkArgument(false, errorMessage);
+
+        // then
+        assertThatIllegalArgumentException()
+            .isThrownBy(checkArgument)
+            .withMessage(errorMessage);
+    }
+
+}