Checking if the set is emtpy or not

import java.util.Set;

import java.util.HashSet;

public class SetIsEmpty {

public static void main(String[] args) {

// creating our set

// set internally uses hashmap

Set<String> set = new HashSet<>();

// adding element to our set

set.add("Gunjan");

set.add("Rehana");

set.add("Kiara");

set.add("Kayra");

set.add("Varsha");

set.add("Sayra");

set.add("Rehana");

Set<String> set1 = new HashSet<>();

set1.add("Rehana");

set1.add("Kayra");

set1.add("Gunjan");

Set<String> set2 = new HashSet<>();

System.out.println(set.isEmpty());

System.out.println(set1.isEmpty());

System.out.println(set2.isEmpty());

}

}