Contingency Table program in Java

	/*
	ConTable.java
	*
	* Copyright 2013 @ Sonu
	*
	*/
	/* package whatever; // don't place package name! */
	import java.util.*;
	import java.lang.*;
	import java.io.*;
	/* Name of the class has to be "Main" only if the class is public. */
	class ConTable
	{
	public static void main (String[] args) throws java.lang.Exception
	{
	int rows,cols;
	Scanner in = new Scanner(System.in);
	System.out.println("Enter an number of rows");
	rows = in.nextInt();
	System.out.println("Enter number of columns");
	cols = in.nextInt();
	int [][] conTable = new int[rows+1][cols+1];
	/*Take the input*/
	for(int i=0;i<rows;i++)
	{
	System.out.println("Enter"+(i+1)+" row data elements");
	for(int j=0;j<cols;j++)
	{
	conTable[i][j]=in.nextInt();
	}
	}
	/*Preparing Contingency Table*/
	int gTotal=0;
	for(int i=0;i<rows;i++)
	{
	int rTemp=0,j=0,cTemp =0;
	for(j=0;j<cols;j++)
	{
	rTemp = rTemp + conTable[i][j];
	cTemp = cTemp + conTable[j][i];
	}
	conTable[i][j] = rTemp;
	conTable[j][i] = cTemp;
	gTotal = gTotal + rTemp;
	}
	conTable[rows][cols] = gTotal;
	System.out.println("**** Contingency Table ****");
	/*printing Contingency Table*/
	for(int i=0;i<=rows;i++)
	{
	for(int j=0;j<=cols;j++)
	{
	System.out.print(conTable[i][j]+"\t");
	}
	System.out.println();
	}
	System.out.println("==========X============ ");
	}
	}

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