How to copy all element of a Hashset to other

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

public class AddAll {

public static void main(String[] args) {

Set<String> hs = new HashSet<String>();
hs.add(“java”);
hs.add(“php”);
hs.add(“html”);
hs.add(“javascript”);
hs.add(“mysql”);

// print hashset
System.out.println(“hs is = ” + hs);

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

/*
* Adds all of the elements in the specified
*  collection to hashset collection
*/

hashSet.addAll(hs);

System.out.println(“hashset is=”+hashSet);

}

}

Output:

hs is = [javascript, php, html, java, mysql]

hashset is=[javascript, php, java, html, mysql]

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