Find2DMatrixSum

This class sums a 2D matrix.

To use this class, just make a simple object of Find2DMatrixSum class and call findSumOfMatrix() method which returns you an int which represents the sum of the matrix. If the sum can exceed the int range, you can use findLongSumOfMatrix() to get the long number as sum.

public int findSumOfMatrix() {
	// returns sum of matrix
}

public int findLongSumOfMatrix() {
	// returns long sum of matrix
}

Example code, for understanding:

public static void main(String[] args){
  int[][] arr = new int[][]{
        {1, 2, 3},
        {4, 5, 6},
        {7, 8, 9}
    };

    Find2DMatrixSum mSum = new Find2DMatrixSum(arr);
    System.out.println(mSum.findSumOfMatrix()); // 45 
}