entrySet() method in Java

/**
 * @author lautturi.com
 * example : illustrate the entrySet() method in Java
 */

import java.util.*;

public class Lau {
	
	public static void main(String[] args) {

		 // Creating an empty HashMap
        HashMap<Integer, String> hash_map = new HashMap<Integer, String>();
  
        // Mapping string values to int keys
        hash_map.put(1, "Hello");
        hash_map.put(3, "Lautturi");
        hash_map.put(4, "Java");
        hash_map.put(5, "World");
        hash_map.put(7, "!");
  
        // Displaying the HashMap
        System.out.println("Initial Mappings are: " + hash_map);
  
        // Using entrySet() to get the set view
        System.out.println("The set is: " + hash_map.entrySet());
        
	}

}

output

Initial Mappings are: {1=Hello, 3=Lautturi, 4=Java, 5=World, 7=!}
The set is: [1=Hello, 3=Lautturi, 4=Java, 5=World, 7=!]