Java Program to count the number of key-value in a hash map

import java.util.*;  
public class demo1
{  
  public static void main(String args[]) 
 {  
  HashMap<Integer,String> hashmap= new HashMap<Integer,String>();  
  hashmap.put(1, "C#");
  hashmap.put(2, "C++");
  hashmap.put(3, "Java");
  hashmap.put(4, "Python");
  hashmap.put(5, "Ruby");
  System.out.println("Elements of hash map: "+hashmap);
  System.out.println("Size of the hash map: "+hashmap.size());
 }
}