Loading GIFs, MediaTracker sometimes doesn't wait

Question

Hi,
I'm trying to solve this problem for a long time without any success. In my applet I load gif images into Image class. GIFs are generated by servlet and than loaded by applet. I use MediaTracker and most of the time images are loaded without any problem. But sometimes MediaTracker just doesn't wait for image to load. It's like there is something wrong with those gifs, but IE can load them and I can open them with PSP and everything is ok.
I even created a method that loads image file into an array and than create Image from byte array. Doesn't help.
Here is my code:
Image       img  = null;
try
    URL     url  = new URL(name);
    byte[]  file = getFile(url.openStream());
    img  = Toolkit.getDefaultToolkit().createImage(file);
    //img = Toolkit.getDefaultToolkit().getImage(new URL(name));
    MediaTracker tracker = new MediaTracker(this);
    tracker.addImage(img,0);
    tracker.waitForID(0,1000);
    if(tracker.isErrorID(0)) { System.out.println("error");}
catch (InterruptedException e) {System.out.println("loadImage-error"); }
catch (MalformedURLException e){System.out.println("loadImage-error"); }
catch (Exception e)            {System.out.println("loadImage-error"); }and getImage method:
public byte[] getFile(InputStream in) throws IOException
     int    bytesRead;
     byte[] buffer = new byte[4096];
     ByteArrayOutputStream bos = new ByteArrayOutputStream();
     while( (bytesRead = in.read(buffer,0,4096)) > 0 )
               bos.write(buffer,0,bytesRead);
     bos.flush();
     bos.close();
     return bos.toByteArray();

Answer 1

Mistery solved!
There was indeed problem in creating gif image files. Sometimes. Bug was in the LZW compression algorithm that I downloaded from the internet. Grrrr.
But be aware, bad images can be opened with IE or PSP, but fail to load by Java.
Matjaz
P.S. Needless to say, Duke Dolars are not offered anymore.