05. Even and Odd Subtraction

import java.util.Scanner;
import java.util.Arrays;

class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        int[] numbers = Arrays
                .stream(scanner.nextLine().split(" "))
                .mapToInt(Integer::parseInt)
                .toArray();

        int evenSum = 0, oddSum = 0;

        for (int n : numbers) {
            if (n % 2 == 0) {
                evenSum += n;
            } else {
                oddSum += n;
            }
        }

        System.out.println(evenSum - oddSum);
    }
}

OR:

import java.util.Scanner;
import java.util.Arrays;

class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        int[] numbers = Arrays
                .stream(scanner.nextLine().split(" "))
                .mapToInt(Integer::parseInt)
                .toArray();

        int evenSum = Arrays.stream(numbers).filter(e -> e % 2 == 0).sum();
        int oddSum = Arrays.stream(numbers).filter(e -> e % 2 == 1).sum();

        System.out.println(evenSum - oddSum);
    }
}