java get the number of enums

/**
 * @author lautturi.com 
 * Java example: getting enum size in java
 */

import java.util.*;

public class Lautturi {

	enum Size {
		SMALL, MEDIUM, LARGE, EXTRALARGE
	}

	public static void main(String[] args) {

		int amount = Size.values().length;
		System.out.println(amount);

	}
}

output:

4