Formatting output of integers in to a table

Question

My output prints:(after I feed it integers from a "Test" class array)
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
int int int int | rowsum
colsum colsum colsum colsum | total
How do I do this?
I have no idea?
I'm supposed to write a toString( ) method to format the table as nicely as possible, without
using the exotic formatting in the IO library.
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 + " ");
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];
Would appreciate any help.

Answer 1

Try this code,
public class TwoWayTable
     int [][] cell;
     public static void main(String a[])
          int[][] data=new int[3][5];
          data[0]=new int[] {4,6,3,8,21};
          data[1]=new int[] {9,1,5,3,18};
          data[2]=new int[] {13,7,8,11,39};
          TwoWayTable tt=new TwoWayTable(data);
          System.out.println(tt.toString());
     public TwoWayTable(int data[][])
          cell = new int[data.length][data[0].length];
          cell = data;
     public String toString()
          StringBuffer sb = new StringBuffer("");
          for(int row=0;row<cell.length;row++)
               for(int col=0;col<cell[row].length;col++)
                    sb.append(cell[row][col]+"\t");
               sb.append("|\t"+calRowSum(cell[row])+"\n");
          int[] colSum=calColSum(cell);
          for(int num=0;num<colSum.length;num++)
               sb.append(colSum[num]+"\t");
          sb.append("|\t"+calRowSum(colSum));
          return sb.toString();
     public int calRowSum(int[] data)
          int total=0;
          for(int num=0;num<data.length;num++) total+=data[num];
          return total;
     public int[] calColSum(int[][] data)
          int[] totals=new int[5];
          for(int row=0;row<data.length;row++)
          for(int col=0;col<data[row].length;col++) totals[col]+=data[row][col];
          return totals;
}Sudha