Adding element in a Set(HashSet)

import java.util.HashSet;

import java.util.Set;

import java.util.Iterator;

public class SetAdd {

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");

// iterating using iterator and printing the elements

Iterator itr = set.iterator();

while (itr.hasNext()) {

System.out.println(itr.next());

}

}

}