HashMapContoh

/**
 * @author Timotius Wirawan
 * @version 27 Oktober 2020
 */

 import java.util.*;
 class HashMapContoh
 {
     public static void main(String args[])
     {
         //membuat hashmap
         HashMap<Integer,String> hm=new HashMap<Integer,String>();

         //input objek
         hm.put(100,"Kano");
         hm.put(101,"Laila");
         hm.put(102,"Badu");
         hm.put(null, "Johan");

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