JAVA: Develop a class TwoWayTable to hold and print a table of integers. Your class should be capable of holding a rectangular table of any size (i.e., 3 rows and 5 columns, 8 rows and 4 columns, etc.). Store the table cells (the integers) in a two-dimensional array of integers. Make sure you copy the actual table values into the array in your class. Also, store the row sums and column sums in two separate one-dimensional integer arrays of the appropriate size. Finally, hold the grand total, i.e., the sum of all the table entries in an integer variable. Provide a constructor that accepts a two-dimensional integer array as its argument, and a method that computes the row sums, column sums and grand total. Finally, write a toString() method that formats the table as nicely as possible.

Use the following skeleton as a guide:

public class TwoWayTable {

int numRows;

int numCols;

int[][] cell;

int[] rowSum;

int[] colSum;

int grandTotal;

// constructor

TwoWayTable(int[][] data) {

// add code here

setMargins();

}

void setMargins() {

// compute the row and column sums;

// margins is the statisticians term

// for these totals, since they appear

// in the margins

}

public String toString() {

// add code here

}

}

The following test program

public class TestTwoWayTable

{

public static void main(String[] args)

{

int[][] testArray =

{

{2, 5, 6, 3}, {9, 4, 4, 7},

{1, 10, 2, 3}, {8, 4, 5, 3} };

TwoWayTable t = new TwoWayTable(testArray);

System.out.println(t);

}

}