Files
2022-08-10 18:04:05 +00:00

16 lines
497 B
Java

// "Replace Optional presence condition with functional style expression" "true-preview"
import java.util.Arrays;
import java.util.List;
import java.util.Optional;
public class Main {
private static Optional<Object> test(List<Object> list) {
Optional<Object> first = list.stream().filter(obj -> obj instanceof String).findFirst();
return first;
}
public static void main(String[] args) {
System.out.println(test(Arrays.asList(null, null, "aa", "bbb", "c", null, "dd")));
}
}