Sum Matrix Elements-Matrix

package com.company;


import java.io.IOException;

import java.util.*;


public class Main {


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

        int[] dimensions = Arrays.stream(scanner.nextLine().split(", "))
                .mapToInt(Integer::parseInt)
                .toArray();
        int rows = dimensions[0];
        int cols = dimensions[1];

        int sum = 0;

        int[][] matrix = new int[rows][cols];

        for (int i = 0; i < rows; i++) {
            int[] arr = Arrays.stream(scanner.nextLine().split(", "))
                    .mapToInt(Integer::parseInt)
                    .toArray();
            matrix[i] = arr;

        }
        for (int r = 0; r < rows; r++) {
            for (int c = 0; c < matrix[r].length; c++) {
                int current = matrix[r][c];
                sum += current;
            }
        }
        System.out.println(rows);
        System.out.println(cols);
        System.out.println(sum);

    }
}