3dArraySumOfDiagonalElements

package Second.Semester;

import java.util.Scanner;

public class OOP2umOfTwoArrays {
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        int[][] matrix = new int[3][3];
        int sum = 0;
        for (int row = 0; row < matrix.length; row++) {
            int[] currentRow = matrix[row];
            for (int cols = 0; cols < currentRow.length; cols++) {
                matrix[row][cols] = Integer.parseInt(scan.nextLine());
                //    sum+=currentRow[cols];
            }
        }
        int a = 0;
        for (int i = 0; i <matrix.length ; i++) {
            sum+= matrix[i][a];
            a++;
        }
        System.out.println(sum);
    }
}