Java adds extra garbage data to downloaded files?

Question

I have been trying to write a updater to my java program and everytime I download a file it adds data to the end. When downloading a small text file it adds (null) a bunch of times to the bottom of the file. When downloading a 175k text file called large.txt it breaks the format a little bit then adds part of the file to the bottom. If you download a zip file it corrupts it. Does anyone know why java adds crap to the bottom of downloaded files or can someone help me out please?
//testDownload.java
import java.util.*;
import java.io.*;
import java.net.*;
public class testDownload
     public static void main(String[] args)
     int count = 0;
          try
               System.out.println("Downloading file");
               java.io.BufferedInputStream in = new java.io.BufferedInputStream(
               new java.net.URL("http://saveourmacs.com/testfile/test.txt").openStream());          
               //new java.net.URL("http://saveourmacs.com/testfile/large.txt").openStream());          
               java.io.FileOutputStream fos = new java.io.FileOutputStream("test.txt");
               //java.io.FileOutputStream fos = new java.io.FileOutputStream("large.txt");
               java.io.BufferedOutputStream bout = new BufferedOutputStream(fos,1024);
               byte data[] = new byte[1024];
               while(in.read(data,0,1024)>=0)
                    bout.write(data);
                    count++;
                    if (count % 1024 == 0)     // every meg
                         System.out.print (">");
               System.out.println();
               System.out.println("File downloaded");
               bout.close();
               in.close();
          catch (Exception e)
               e.printStackTrace();
               //System.exit(-1);
}

Answer 1

You always write chunks of 1024 bytes; what if the last chunk read was less than 1024 bytes? Hint: use the return value of the read( ... ) method.
kind regards,
Jos
Edited by: JosAH on May 28, 2009 3:37 PM