Program: How to compare two LinkedHashSet and retain elements which are same on both LinkedHashSet?

Below example shows how to compare two LinkedHashSet and retain elements which are same on both LinkedHashSet

package com.java2novice.linkedhashset;

import java.util.LinkedHashSet;

public class MyLhsRetainEx {

	public static void main(String a[]){
		
		LinkedHashSet<String> lhs = new LinkedHashSet<String>();
		//add elements to LinkedHashSet
		lhs.add("first");
		lhs.add("second");
		lhs.add("third");
		lhs.add("apple");
		lhs.add("rat");
		System.out.println(lhs);
		LinkedHashSet<String> subSet = new LinkedHashSet<String>();
		subSet.add("rat");
		subSet.add("second");
		subSet.add("first");
		lhs.retainAll(subSet);
		System.out.println("LinkedHashSet content:");
		System.out.println(lhs);
	}
}

[first, second, third, apple, rat]
LinkedHashSet content:
[first, second, rat]