Files
2022-12-23 13:26:29 +00:00

18 lines
506 B
Java

// "Collapse loop with stream 'findFirst()'" "true-preview"
import java.util.Arrays;
import java.util.List;
import java.util.Objects;
import java.util.Optional;
public class Main {
private static String test(List<String> list) {
Optional<String> found = list.stream().filter(Objects::nonNull).findFirst();
// optional!
return found.orElse(null);
}
public static void main(String[] args) {
System.out.println(test(Arrays.asList(null, null, "aa", "bbb", "c", null, "dd")));
}
}