java how to generate an uuid

/**
 * @author lautturi.com 
 * Java example: creating an uuid in java
 */

import java.util.*;

public class Lautturi {

	public static void main(String[] args) {
		
		String uuid = UUID.randomUUID().toString();
		System.out.println(uuid);
		
	}
}

output:

419449db-2a91-486a-8cbd-ad26b8b51fe8