Main.java Source code

Introduction

Here is the source code for Main.java

Source

import java.util.HashSet;

public class Main {
    public static void main(String[] args) {
        HashSet<Integer> hSet = new HashSet<Integer>();
        System.out.println("Size of HashSet : " + hSet.size());

        hSet.add(new Integer("1"));
        hSet.add(new Integer("2"));
        hSet.add(new Integer("3"));

        System.out.println(hSet.size());

        hSet.remove(new Integer("1"));
        System.out.println(hSet.size());
    }
}
/*
Size of HashSet : 0
3
2
*/