Set Operations Java

PROGRAM TO ILLUSTRATE SET OPERATIONS




import java.util.*; 

public class SetExample 

{ 

    public static void main(String args[]) 

    { 

        Set<Integer> a = new HashSet<Integer>(); 

        a.addAll(Arrays.asList(new Integer[] {1, 3, 2, 4, 8, 9, 0})); 

        Set<Integer> b = new HashSet<Integer>(); 

        b.addAll(Arrays.asList(new Integer[] {1, 3, 7, 5, 4, 0, 7, 5})); 

  

        // To find union 

        Set<Integer> union = new HashSet<Integer>(a); 

        union.addAll(b); 

        System.out.print("Union of the two Set"); 

        System.out.println(union); 

  

        // To find intersection 

        Set<Integer> intersection = new HashSet<Integer>(a); 

        intersection.retainAll(b); 

        System.out.print("Intersection of the two Set"); 

        System.out.println(intersection); 

  

        // To find the symmetric difference 

        Set<Integer> difference = new HashSet<Integer>(a); 

        difference.removeAll(b); 

        System.out.print("Difference of the two Set"); 

        System.out.println(difference); 

    } 

} 

OUTPUT

Union of the two Set[0, 1, 2, 3, 4, 5, 7, 8, 9]
Intersection of the two Set[0, 1, 3, 4]
Difference of the two Set[2, 8, 9]

CREDITS: https://www.geeksforgeeks.org/set-in-java/