package holding;

/**

* RUN:

* javac holding/SetOperations.java && java holding.SetOperations

* OUTPUT:

* contains H: true

* contains N: false

* set2 in set1: true

* set1: [D, E, F, G, A, B, C, L, M, I, J, K]

* set2 in set1: false

* set2 removed from set1: [D, E, F, G, A, B, C, M]

* 'X Y Z' added to set1: [D, E, F, G, A, B, C, M, Y, X, Z]

*/

import java.util.*;

public class SetOperations {

private static void print(Object obj) {

System.out.print(obj);

}

private static void println(Object obj) {

System.out.println(obj);

}

public static void main(String[] args) {

Set<String> set1 = new HashSet<String>();

Collections.addAll(set1, "A B C D E F G H I J K L".split(" "));

set1.add("M");

println("contains H: " + set1.contains("H"));

println("contains N: " + set1.contains("N"));

Set<String> set2 = new HashSet<String>();

Collections.addAll(set2, "H I J K L".split(" "));

println("set2 in set1: "+set1.containsAll(set2));

set1.remove("H");

println("set1: " + set1);

println("set2 in set1: " + set1.containsAll(set2));

set1.removeAll(set2);

println("set2 removed from set1: " + set1);

Collections.addAll(set1, "X Y Z".split(" "));

println("'X Y Z' added to set1: " + set1);

}

}