how do i create a dictionary in java

/**
 * @author lautturi.com
 * Java example: java dictionary
 */

import java.util.*;
import java.util.Map.Entry;

public class Lautturi {

	public static void main(String[] args) {
		
		Map<String, String> dictionary = new HashMap<String, String>();

		dictionary.put("key", "value");
		dictionary.put("13", "apple");
		String value = dictionary.get("key");
		String value2 = dictionary.get("13");
		System.out.println(value);
		System.out.println(value2);
		
	}
}

output:

value
apple