Java 8: Infinite Stream of UUIDs
import java.util.UUID;
import java.util.stream.Stream;
import org.junit.Test;
@Test
public void infiniteUUIDStream() {
Stream<String> uuidStream = Stream.
generate(UUID::randomUUID).
map(u -> u.toString());
uuidStream.
limit(10).
forEach(System.out::println);
}
Now you only need a few asserts
to verify that the infinite Stream
only comprises unique values :-)
See you at Java EE Workshops at Munich Airport, Terminal 2 or Virtual Dedicated Workshops / consulting. Is Munich's airport too far? Learn from home: airhacks.io.
It's always a pleasure to read your blog . Has inspired me to start today the new NetBeans IDE and to experiment with your example .
Posted by Bernd on November 25, 2015 at 09:59 AM CET #
Nice.
We can also replace u -> u.toString() with UUID::toString
Philip
Posted by Philip Schwarz on November 26, 2015 at 09:31 AM CET #