import java.util.*; //We are importing the HashMap class from the util package!



public class HashMapTest

{

	public static void main(String[] args)

	{

		String s;

		Integer num;

		HashMap map=new HashMap(); //Create a new HashMap Object



		//Store a key-value pair in the map

		//The Key is a String "HelloMessage"

		//The Value is also a String "Hello World! This is my HashMap Test!"

		map.put("HelloMessage", "Hello World! This is my HashMap Test!");



		//Store a second key-value pair in the map

		//The Key is a Integer Object wrapping the int: 2

		//The Value is a String "TWO"

		num=new Integer(2);

		map.put(num, "TWO");



		//Let's store the reverse as well.

		//In this case the key is String "ONE"

		//And the value is Integer(1)...

		num=new Integer(1);

		map.put("ONE", num);





		//------------------------------------------------->





		//Retrieve the values from the map and print



		//The Number Integer

		num=(Integer)map.get("ONE");

		System.out.println(num);



		//The Number String

		num=new Integer(2);

		s=(String)map.get(num);

		System.out.println(s);



		//The Hello Message

		s=(String)map.get("HelloMessage");

		System.out.println(s);

	}

}