HashSetExample.java Source code

Introduction

Here is the source code for HashSetExample.java

Source

import java.util.HashSet;
import java.util.Iterator;
import java.util.Set;

public class HashSetExample {
    public static void main(String[] args) {
        Set<Integer> set = new HashSet<Integer>();

        set.add(new Integer(1));
        set.add(new Integer(2));
        set.add(new Integer(3));
        set.add(new Integer(4));
        set.add(new Integer(5));
        set.add(new Integer(6));
        set.add(new Integer(7));
        set.add(new Integer(8));
        set.add(new Integer(9));
        set.add(new Integer(10));

        // Use iterator to display the vsetes
        System.out.println("HashSet Before: ");
        for (Iterator i = set.iterator(); i.hasNext();) {
            Integer integer = (Integer) i.next();
            System.out.println(integer);
        }

        // Remove the integer 6
        System.out.println("\nRemove integer 6");
        set.remove(new Integer(6));

        // Use iterator to display the vsetes
        System.out.println("\nHashSet After: ");
        for (Iterator i = set.iterator(); i.hasNext();) {
            Integer integer = (Integer) i.next();
            System.out.println(integer);
        }

    }
}