Java Create a TreeMap

/**
 * @author lautturi.com
 * Java example:Creating a treemap in java
 */

import java.util.*;

public class Lautturi {

	public static void main(String[] args) {

		TreeMap<Integer, String> fruits = new TreeMap<>();

		fruits.put(5, "Apple");
		fruits.put(7, "Banana");
		fruits.put(12, "Cherry");
		fruits.put(33, "Orange");
		fruits.put(23, "Lautturi");

		Set<Integer> keySet = fruits.keySet();

		for (Integer keys : keySet) {
			System.out.println(keys + " : " + fruits.get(keys));
		}

	}
}

output:

5 : Apple
7 : Banana
12 : Cherry
23 : Lautturi
33 : Orange