[Homework] Trying to display name + sum of numbers from file

import java.io.*;
import java.util.*;

public class FileIOedit
{
   public static void main(String args[])
   {//begin write to file method

      FileReader inFile;
      BufferedReader bFile;
      FileWriter fw;
      BufferedWriter w;
      String s, word, temp = "";
      String inputFile = "Inpu.dat";
      StringTokenizer line;

      try
      {
		 //Open the input stream for reading
         inFile = new FileReader(inputFile);
         bFile = new BufferedReader (inFile);

         //Open the output file for writing
         fw = new FileWriter("test.dat");
         w = new BufferedWriter (fw);

		 //get first line of input file
	     s = bFile.readLine();

		 //while their are more lines in the input file
         while (s != null)
         {
			 line = new StringTokenizer(s);

			 //while there are more words in this line
			 while(line.hasMoreTokens())
			 {
				 word = line.nextToken();

				 //int num = Integer.parseInt(word);

				 //if this word is going to overflow the output line

					temp = temp + word + " ";
			}
			//get next line from the input file
			s = bFile.readLine();
         }
         //write the last line to the output file, flush and close buffer
         w.write(temp);
         w.flush ();
         w.close ();

       }//end try

	   catch(IOException exception)
	   {
			System.out.println("Hey you idiot!!!");
			System.out.println(exception);
	   }
   }//end main method
}//end class

	   len = Namebefore.length();
	   position = Namebefore.indexOf(" ");

	   firstName = Namebefore.substring(0, position);
	   lastName = Namebefore.substring(position +1, len);