Java List sum the squares of all odd integers via Stream
import java.util.Arrays; import java.util.List; public class Main { public static void main(String[] args) { // Get a list of integers from 1 to 5 List<Integer> numbers = Arrays.asList(1, 2, 3, 4, 5); // Compute the sum of the squares of all odd integers in the list int sum = numbers .stream()//from w ww .j av a 2s. c o m .filter(n -> n % 2 == 1) .map(n -> n * n) .reduce(0, Integer::sum); System.out.println("Sum = " + sum); } }