java concatenate strings that are not null and empty with delimiter

/**
 * @author lautturi.com 
 * Java example: java join strings that are not null and empty
 */

import java.util.*;
import java.util.stream.Collectors;
import java.util.stream.Stream;
public class Lautturi {
	public static void main(String[] args) {

		String joinedString = 
			    Stream.of("hello","lautturi",null,"","world","lau")
			          .filter(s -> s != null && !s.isEmpty())
			          .collect(Collectors.joining("-"));

		System.out.println(joinedString);
	}
}

output:

hello-lautturi-world-lau