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<String> newset = new HashSet<String>();

        // populate hash set
        newset.add("Learning");
        newset.add("from");
        newset.add("java2s.com");

        // check the existence of element
        boolean exist = newset.contains("Simply");

        System.out.println("Is the element 'Simply' exists: " + exist);
    }
}