/**
 * HashMapContoh
 * @Raffi Pratama
 * @26-10-2020
 */

import java.util.*;
class HashMapContoh
{
    public static void main(String args[])
    {
        HashMap<Integer,String> hm = new HashMap<Integer,String>();
        hm.put(100,"Kano");
        hm.put(101,"Laila");
        hm.put(102,"Badu");
        hm.put(null,"Johan");

        for(Map.Entry m:hm.entrySet())
        {
            System.out.println(m.getKey() + " " + m.getValue());
        }
    }
}