Main.java Source code

Introduction

Here is the source code for Main.java

Source

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

public class Main {

    public static void main(String[] a) {
        Set<String> set = new HashSet<String>();
        set.add("Hello");
        if (set.add("Hello")) {
            System.out.println("addition successful");
        } else {
            System.out.println("addition failed");
        }
    }
}