Check two HashMap for equality in Java

To check whether two HashMap are equal or not, use the equals() method.

Let us first create the first HashMap −

// Create hash map 1 HashMap hm1 = new HashMap(); hm1.put("Shirts", new Integer(700)); hm1.put("Trousers", new Integer(600)); hm1.put("Jeans", new Integer(1200)); hm1.put("Android TV", new Integer(450)); hm1.put("Air Purifiers", new Integer(300)); hm1.put("Food Processors", new Integer(950));

Let us now create the second HashMap −

HashMap hm2 = new HashMap(); hm2.put("Shirts", new Integer(700)); hm2.put("Trousers", new Integer(600)); hm2.put("Jeans", new Integer(1200)); hm2.put("Android TV", new Integer(450)); hm2.put("Air Purifiers", new Integer(300)); hm2.put("Food Processors", new Integer(950));

To check whether both the HashMap are equal or not, use the equals() method like this −

hm1.equals(hm2)

The following is an example to check two HashMap for equality −

Example

 Live Demo

import java.util.*; public class Demo { public static void main(String args[]) { // Create hash map 1 HashMap hm1 = new HashMap(); hm1.put("Shirts", new Integer(700)); hm1.put("Trousers", new Integer(600)); hm1.put("Jeans", new Integer(1200)); hm1.put("Android TV", new Integer(450)); hm1.put("Air Purifiers", new Integer(300)); hm1.put("Food Processors", new Integer(950)); System.out.println("Map 1 = "+hm1); // Create hash map 2 HashMap hm2 = new HashMap(); hm2.put("Shirts", new Integer(700)); hm2.put("Trousers", new Integer(600)); hm2.put("Jeans", new Integer(1200)); hm2.put("Android TV", new Integer(450)); hm2.put("Air Purifiers", new Integer(300)); hm2.put("Food Processors", new Integer(950)); System.out.println("Map 2 = "+hm2); System.out.println("Map 1 is equal to Map 2? "+hm1.equals(hm2)); } }

Output

Map 1 = {Shirts=700, Food Processors=950, Air Purifiers=300, Jeans=1200, Android TV=450, Trousers=600} Map 2 = {Shirts=700, Food Processors=950, Air Purifiers=300, Jeans=1200, Android TV=450, Trousers=600} Map 1 is equal to Map 2? true