I am trying to run the following program and am getting this error:

Question

java.util.InputMismatchException

import java.io.*;

import java.util.*;

public class Pre2

{

static Scanner console = new Scanner(System.in);

public static void main(String[] args)throws IOException
{

Scanner inFile = new Scanner(new FileReader("Pre2Input.txt"));

PrintWriter outFile = new

PrintWriter(new FileWriter("Pre2Output.txt"));

int num1, num2;

num1 = inFile.nextInt();

num2 = inFile.nextInt();

outFile.println("Sum = " + (num1 + num2));

outFile.close();

}

}

What am I doing wrong? Pls help. Thanks in advanced :)