How to Copy Map content to another Hashtable ?

package com.JavaInterview.Programs;

import java.util.Hashtable;

import java.util.HashMap;

/**

 * Copy Map content to another Hashtable

 * 

 * @author:http://javainterviewprograms.blogspot.in/

 * 

 */

public class CopyMapToHashTable {

 public static void main(String args[]) {

  // Create Hashtable Instance

  Hashtable<Integer, String> JipHT = new Hashtable<Integer, String>();

  // Adding element to Hashtable

  JipHT.put(1, "first");

  JipHT.put(2, "second");

  JipHT.put(3, "third");

  // Print the Hashtable

  System.out.println("Original Hashtable :" + JipHT);

  // Create HashMap

  HashMap<Integer, String> JipHM = new HashMap<Integer, String>();

  JipHM.put(5, "five");

  JipHM.put(6, "six");

  // Copying Map to Hashtable

  JipHT.putAll(JipHM);

  // Print the Hashtable

  System.out.println("Hashtable after copying :" + JipHT);

 }

}

Output:

Original Hashtable :{3=third, 2=second, 1=first}

Hashtable after copying :{6=six, 5=five, 3=third, 2=second, 1=first}