how to add element to dictionary in java

/**
 * @author lautturi.com
 * Java example: add an element to dictionary in java 
 */

import java.util.*;

public class Lautturi {

	public static void main(String[] args) {
		
        Dictionary<Integer, String> dict = new Hashtable<Integer, String>();
        
        dict.put(1,"Java");
        dict.put(2,"Python");
        dict.put(3,"C++");
        dict.put(4,"Perl");
        dict.put(5,"JavaScript");
        
        System.out.println(dict);

	}
}

output:

{5=JavaScript, 4=Perl, 3=C++, 2=Python, 1=Java}