Java : Program to find the sum of each row and each column of n x m of 2D Matrix

package jun2;

/*
 * Find the sum of each row and each column of n x m of 2D Matrix 
 * 
 */

public class SumOf2DMatrixRowsAndColumn {

 
 public static void main(String[] args) {
    
  int [][] twoDMatrix = {{ 20, 18, 23, 20, 16 },
         { 30, 20, 18, 21, 20 },
         { 16, 19, 16, 53, 24 },
         { 25, 24, 22, 24, 25 }
        };
        outputArray(twoDMatrix);
    }

    public static void outputArray(int[][] array) {
        int sum= 0;
        int rowSize = array.length;
        
        int[] colSum =new int[array[0].length];
        for (int i = 0; i < array.length; i++){   
            for (int j = 0; j < array[i].length; j++){                
                sum += array[i][j];
                colSum[j] += array[i][j];
            }
            System.out.println("sum of rows "+ i +" = " + sum);
        }  
        System.out.println("  ");
        for(int k=0;k<colSum.length;k++){
            System.out.println("sum of columns "+ k +" = " + colSum[k]);
        } 
        
        
    }
 
}

/*output:

sum of rows 0 = 97
sum of rows 1 = 206
sum of rows 2 = 334
sum of rows 3 = 454
  
sum of columns 0 = 91
sum of columns 1 = 81
sum of columns 2 = 79
sum of columns 3 = 118
sum of columns 4 = 85

*/