Program: How to read elements using Enumeration in Hashtable?

Below example shows how to get all keys as Enumeration object. By calling keys() method, we can get all keys as Enumeration object. By using Enumeration methods like hasMoreElements() and nextElement() we can read all values from Hashtable.

package com.java2novice.hashtable;

import java.util.Enumeration;
import java.util.Hashtable;

public class MyHashtableEnumaration {

public static void main(String a[]){
		
		Hashtable<String, String> hm = new Hashtable<String, String>();
		//add key-value pair to Hashtable
		hm.put("first", "FIRST INSERTED");
		hm.put("second", "SECOND INSERTED");
		hm.put("third","THIRD INSERTED");
		Enumeration<String> keys = hm.keys();
		while(keys.hasMoreElements()){
			String key = keys.nextElement();
			System.out.println("Value of "+key+" is: "+hm.get(key));
		}
	}
}

Value of third is: THIRD INSERTED
Value of second is: SECOND INSERTED
Value of first is: FIRST INSERTED