Тест — filter и map

import java.util.List;

public class Main {
    public static void main(String[] args) {
        List<Integer> xs = List.of(1, 2, 3, 4, 5);
        List<Integer> r = xs.stream()
            .filter(x -> x % 2 == 1)
            .map(x -> x * 10)
            .toList();
        System.out.println(r);
    }
}