Summing the Rows and Columns in an Array

Question

I am importing a 2-dimensional array of integers.(which is held in a 2-dimensional array)
I need to store the row sums and column sums in separate 1-dimensional arrays.
I can get the integers in and print out a list along with the grand total(sum of all).
But, how do I pass each row's and each column's value in to my sumRow and sumCol methods to get the sum for each row and each column?
Can I do the row and column summing in the same "for" statement where I calculate the "grand total"? Or am I making this more difficult than it is?
Would appreciate any help.
This is what I have so far:
import java.awt.Graphics;
import java.applet.Applet;
public class TwoWayTable extends Applet {
     int numRows;
     int numCols;
     int [] [] cell;
     int [] rowSum;
     int [] colSum;
     int grandTotal;
public TwoWayTable(int [][] data){
grandTotal = 0;
cell = new int [data.length][data.length];
for(int i = 0; i < data.length; i++)
for(int j = 0; j < data.length; j++){
     cell[i][j] = data[i][j];
grandTotal += cell[i][j];
     System.out.println(cell[i][j]);
System.out.println(grandTotal);
public int sumRow(int [] data2){
     int rowaccumulator=0;
     rowSum = new int[data2.length];
     for(int numRows = 0; numRows < rowSum.length; numRows++){
     rowaccumulator += rowaccumulator + rowSum[numRows];
          return(rowaccumulator);
public int sumCol(int [] data3){
     int colaccumulator = 0;
     colSum = new int[data3.length];
     for(int numCols = 0; numCols < colSum.length; numCols++){
          colaccumulator += colaccumulator + colSum[numCols];
          return(colaccumulator);

Answer 1

Thanks for your input.
I'll make the changes that you suggest.(after this)
My output prints:
4 6 3 8 21
9 1 5 3 18
13 7 8 11 39
numbers are right, but I need to format the table
the output needs to look like this:
int int int int | rowsum
int int int int | rowsum
colsum colsum colsum colsum | total
How do I do this?
I have no idea?
I'm supposed to call a "void setMargins( )" method to line this up, without
using the exotic formatting in the IO library.
I'm also supposed to use "public String toString( )"
This is what I have so far:
import java.awt.Graphics;
import java.applet.Applet;
public class TwoWayTable extends Applet {
int numRows;
     int numCols;
     int [] [] cell;
     int [] rowSum;
     int [] colSum;
     int grandTotal;
public TwoWayTable(int [][] data){
cell = new int [data.length][data.length];     
for(int i = 0; i < data.length; i++){
for(int j = 0; j < data.length; j++){
     cell[i][j] = data[i][j];
calcTotals(cell);
for(int i = 0; i < cell.length; ++i){
for(int j = 0; j < cell.length; ++j){
System.out.print(cell[i][j] + " ");
System.out.println(rowSum[i] + " ");
for(int j = 0; j < cell.length-1; ++j){
System.out.print(colSum[j] + " ");
System.out.println(colSum[cell.length-1] + " " + (grandTotal));
     public void calcTotals(int [][] data2){
          grandTotal = 0;
          rowSum = new int[data2.length];                         
          colSum = new int[data2.length];                         
          for(int numRows = 0; numRows < data2.length; numRows++){
          for(int numCols = 0; numCols < data2.length; numCols++){
               grandTotal += data2[numRows][numCols];               
               rowSum[numRows] += data2[numRows][numCols];
               colSum[numCols] += data2[numRows][numCols];