Java tutorial
import java.util.ArrayList; import java.util.Arrays; import java.util.Collections; import java.util.List; public class Main { public static void main(String args[]) { String init[] = { "One", "Two", "Three", "One", "Two", "Three" }; // create two lists List<String> list1 = new ArrayList<String>(Arrays.asList(init)); List<String> list2 = new ArrayList<String>(Arrays.asList(init)); // remove from list1 list1.remove("One"); System.out.println("List1 value: " + list1); // remove from list2 using singleton list2.removeAll(Collections.singleton("One")); System.out.println("The SingletonList is :" + list2); } }