2. Sum Numbers

package DPM;

import java.util.Arrays;
import java.util.List;
import java.util.Scanner;
import java.util.function.Function;
import java.util.stream.Collectors;

public class Main {
    public static void main(String[] args){
        Scanner scan = new Scanner(System.in);
        String[] line = scan.nextLine().split(", ");
        Function<String, Integer> parse = Integer::parseInt;

        List<Integer> nums = Arrays.stream(line)
                .map(parse)
                .collect(Collectors.toList());
        System.out.println("Count = " + nums.size());

        int sum = nums.stream()
                .reduce(0, (a, b) -> a+b);
        System.out.println("Sum = " + sum);
    }
}