Java hashmap contains method

/**
 * @author lautturi.com
 * Java example: hashmap contains 
 */

import java.util.*;

public class Lautturi {
	public static void main(String[] args) {

		HashMap hash_map = new HashMap();
		hash_map.put(1,"Apple");
		hash_map.put(2,"Banana");
		hash_map.put(3,"Cherry");
		hash_map.put(4,"Orange");	
		
		String searchValue = "Banana";
		if(hash_map.containsValue(searchValue)) {
			System.out.println("The map maps the value");
		}
		
	}
}