MatrixSum

import java.util.*;

public class App7 {
    public static void main(String[] args) {
        int[][] matrix ={
                {1,2,3},
                {4,5,6},
                {7,8,9}
        };
        int sum = 0;
        for (int row = 0; row < matrix.length; row++) {
            int[] currentRow = matrix[row];
            for (int cols = 0; cols < currentRow.length; cols++) {
                sum+=currentRow[cols];
            }
        }
        System.out.println("MatrixSum: "+ sum);
    }
}