Retaining all elements of Set 2 in Set1

 

import java.util.Iterator;

import java.util.LinkedHashSet;

import java.util.Set;

import javax.management.monitor.StringMonitor;

public class LinkedHashSetRetainAll {

public static void main(String[] args) {

// creating our LinkedHashSet

Set<String> lhs = new LinkedHashSet<>();

// adding element to our set

// insertion order is maintained here

lhs.add("Neha");

lhs.add("Nisha");

lhs.add("Nishu");

lhs.add("Rekha");

lhs.add("Madhu");

lhs.add("Disha");

lhs.add("Tara");

lhs.add("Tara"); // duplicate element can't be added

// creating another LinkedHashSet

Set<String> lhs1 = new LinkedHashSet<>();

lhs1.add("Madhu");

lhs1.add("Nishu");

lhs1.add("Neha");

// Adding all elements of lhs to lhs1

System.out.println("After invoking retainAll() method");

lhs.retainAll(lhs1);

System.out.println(lhs);

}

}