Reference static fields from the class not the object instance

Exercise_09/Exercise_09_05/Exercise_09_05.java

@@ -21,16 +21,16 @@ public static void main(String[] args) {
 
 		// Display the current year, month, and day in format Mth/Day/Year
 		System.out.print("\nCurrent year, month, and day in format Mth/Day/Year: ");
-		System.out.println(calender.get(calender.MONTH) + "/" +
-			calender.get(calender.DAY_OF_MONTH) + "/" + calender.get(calender.YEAR));
+		System.out.println(calender.get(GregorianCalendar.MONTH) + "/" +
+			calender.get(GregorianCalendar.DAY_OF_MONTH) + "/" + calender.get(GregorianCalendar.YEAR));
 
 		// Set elapsed time since January 1, 1970 to 1234567898765L
 		calender.setTimeInMillis(1234567898765L);
 
 		// Display the year, month and day
 		System.out.print("\nElapsed time since January 1, 1970 set to " +
 			"1234567898765L in format Mth/Day/Year: ");
-		System.out.println(calender.get(calender.MONTH) + "/" +
-			calender.get(calender.DAY_OF_MONTH) + "/" + calender.get(calender.YEAR));
+		System.out.println(calender.get(GregorianCalendar.MONTH) + "/" +
+			calender.get(GregorianCalendar.DAY_OF_MONTH) + "/" + calender.get(GregorianCalendar.YEAR));
 	}
 }

Exercise_19/Exercise_19_03/Exercise_19_03.java

@@ -1,22 +1,29 @@
-/*********************************************************************************
-* (Distinct elements in ArrayList) Write the following method that returns a new *
-* ArrayList. The new list contains the non-duplicate elements from the original  *
-* list.                                                                          *
-*                                                                                *
-* public static <E> ArrayList<E> removeDuplicates(ArrayList<E> list)             *
-*********************************************************************************/
+/**************************************************************************************
+* (Distinct elements in ArrayList) Write the following method that returns a new      *
+* ArrayList. The new list contains the non-duplicate elements from the original list. *
+*                                                                                     *
+* public static <E> ArrayList<E> removeDuplicates(ArrayList<E> list)                  *
+**************************************************************************************/
 import java.util.ArrayList;
 
 public class Exercise_19_03 {
 	/** Removes duplicate elements from an array list */
-	public static <E extends Comparable<E>> 
-			ArrayList<E> removeDuplicates(ArrayList<E> list) {
-		for (int i = 0; i < list.size() - 1; i++) {
-			for (int j = i + 1; j < list.size(); j++) {
-				if (list.get(i).compareTo(list.get(j)) == 0)
-					list.remove(j);
+	public static <E extends Comparable<E>> ArrayList<E> removeDuplicates(ArrayList<E> list) {
+		ArrayList<E> newList = new ArrayList<E>();
+		if(!list.isEmpty()){
+			newList.add(list.get(0));	//adds 1st item from reference list
+			for (int i = 1; i < list.size(); i++) {		//loop starts from 1
+				boolean shouldAddToNewList = true;
+				for (int j = 0; j < newList.size(); j++) {
+					if (list.get(i).compareTo(newList.get(j)) == 0){
+						shouldAddToNewList = false;
+					}
+				}
+				if(shouldAddToNewList){
+					newList.add(list.get(i));
+				}
 			}
 		}
-		return list;
-	} 
+		return newList;
+	}
 }