student list using hashmap java

1import java.util.*;
2class Check
3{
4	public static void main(String arg[]) 
5	{	
6	   HashMap<Integer, String> hm=new HashMap<Integer, String>();
7	   
8       hm.put(17,"abhishek");
9 
10       hm.put(50,"ajith");
11 
12	   hm.put(71,"alekhya");
13 
14	   hm.put(11,"amani");
15 
16	   String s=hm.get(50);    //s="ajith";
17 
18	   System.out.println(s);  
19 
20	   s=hm.get(11);          // s="amani";
21 
22	   System.out.println(s);
23	}
24}
25