help sum of two array2d

Question

public class MultArray {

static public void sum(int[][] a, int[][] b){
int rows = a[0].length/2;
int colums = a[1].length;
int[][] soma = new int[rows ][colums ];

for(int i = 0; i < rows; i++){
for(int j = 0; i < colums ; j++){
soma[i][j]= a[i][j] + b[i][j];
}
}

System.out.println("sum of matrizes is : ");
for(int[] index: soma){
for(int elementos: index){
System.out.print(elementos+ " ");
}
System.out.println("");
}
}

public static void main(String args[]) {

int[][] first = { { 2, 3, 4,-6 }, { 5, 2, 3,0} };
int[][] second = { { -4, 5, 3,7 }, { 5, 6, 3,1 } };

sum(first , second );
}
}

Answer 1

Second loop condition must be j<columns; instead of i<columns;
typo?
rows, columns may become wrong if you change dimentions..

Answer 2

Jayakrishna thank you very much, solved

Answer 3

You're welcome..