Java tutorial
import java.util.Arrays; import java.util.List; public class Main { public static void main(String[] args) { List<Integer> numbers = Arrays.asList(1, 2, 3, 4, 5); int sum = numbers.stream().filter(n -> n % 2 == 1).map(n -> n * n).reduce(0, Integer::sum); System.out.println(sum); } }