Java tutorial
import java.util.EnumSet; enum Numbers { ONE, TWO, THREE, FOUR, FIVE }; public class Main { public static void main(String[] args) { EnumSet<Numbers> set1 = EnumSet.allOf(Numbers.class); System.out.println("Set1:" + set1); EnumSet<Numbers> set2 = set1.clone(); System.out.println("Set2:" + set2); } }