/*
Output:
true
[I, G, E]
* */
import java.util.Arrays;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
public class MainClass {
public static void main(String args[]) {
String orig[] = { "I", "P", "E", "G", "P" };
String act[] = { "P", "P", "S" };
Set origSet = new HashSet(Arrays.asList(orig));
List actList = Arrays.asList(act);
System.out.println(origSet.removeAll(actList));
System.out.println(origSet);
}
}