Program to find the sum of each row and each column of a matrix

public class RowColSum {
public static void main(String[] args) {
int[][] a = {
{1, 2, 3},
{4, 5, 6}
};
for(int i=0; i<2; i++) {
int rSum = 0;
for(int j=0; j<3; j++) {
rSum += a[i][j];
}
System.out.println("Row " + (i+1) + " sum: " + rSum);
}
for(int j=0; j<3; j++) {
int cSum = 0;
for(int i=0; i<2; i++) {
cSum += a[i][j];
}
System.out.println("Col " + (j+1) + " sum: " + cSum);
}
}
}

Output: