Loading an image in an applet

Question

I am trying to load and display an existing image to my applet and break the image up into segments to allow the pieces to be moved into their correct position. However it is only getting as far as cutting the image up but it does not complete loading the image. Below is the run() method im using to load it:
public void run()
        int i;
        MediaTracker trackset;              // Tracker for images
        Image WholeImage;                 // The whole image
                    Image ResizedImage;
        ImageFilter filter;
     // Determine the size of the applet
     r = getSize();
        // Load up the image
        if (getParameter("SRC") == null)
          Error("Image filename not defined.");
     WholeImage = getImage(getDocumentBase(), getParameter("SRC"));
     // Scale original image if needed
        // Make the image load completely and put the image
        // into the track set.  Where it waits in paint() method.
        trackset = new MediaTracker(this);
        trackset.addImage(WholeImage, 1);
        // Mix up the puzzle
        System.out.println("Mixing puzzle.");
        PaintScreen = 2;
        repaint();
        try {
        Thread.sleep(100);
     } catch (InterruptedException e) {
        // Tell user of the wait for image loading
       //Trap trackset exceptions that track if the image
       //hasn't loaded properly and output to the user.
        PaintScreen = 0;
        repaint();
        try {
        Thread.sleep(100);
     } catch (InterruptedException e) {
        try {
           trackset.waitForID(1);
        } catch (InterruptedException e) {
           Error("Loading Interrupted!");
        // Check if image loaded up correctly
        //Where is image is held in the same directory
        //as the HTML file use getImage method to pass
        //getDocumentBase(), taking in the getParameter.
        if (WholeImage.getWidth(this) == -1)
             PaintScreen = 3;
             repaint();
             WholeImage = getImage(getDocumentBase(), getParameter("SRC"));
             trackset = new MediaTracker(this);
             trackset.addImage(WholeImage, 1);
             try {
                trackset.waitForID(1);
             } catch (InterruptedException e) {
                Error("Loading Interrupted!");
             if (WholeImage.getWidth(this) == -1)
                  PaintScreen = 4;
                  repaint();
                  stop();
                  return;
     // Resize picture if needed.
     int ResizeOption = integerFromString(getParameter("RESIZE"));
     if ((r.width != WholeImage.getWidth(this) ||
          r.height != WholeImage.getHeight(this)) &&
            ResizeOption != 0)
          if (ResizeOption == 2)
            ResizedImage =
              WholeImage.getScaledInstance(r.width, r.height - TOP_MARGIN,
                                 WholeImage.SCALE_FAST);
          else if (ResizeOption == 3)
            ResizedImage =
              WholeImage.getScaledInstance(r.width, r.height - TOP_MARGIN,
                                 WholeImage.SCALE_SMOOTH);
          else if (ResizeOption == 4)
            ResizedImage =
              WholeImage.getScaledInstance(r.width, r.height - TOP_MARGIN,
                                 WholeImage.SCALE_AREA_AVERAGING);
          else
            ResizedImage =
              WholeImage.getScaledInstance(r.width, r.height - TOP_MARGIN,
                                 WholeImage.SCALE_DEFAULT);
          trackset.addImage(ResizedImage, 2);
          PaintScreen = 5;
          repaint();
          try {
          Thread.sleep(100);
          } catch (InterruptedException e) {
          try {
          trackset.waitForID(2);
          } catch (InterruptedException e) {
          Error("Loading Interrupted!");
          WholeImage = ResizedImage;
        // Complete loading image.  Start background loading other things
        // Also put image into the Graphics class
        // Split up main image into smaller images
        PaintScreen = 1;
        repaint();
        try {
           Thread.sleep(100);
        } catch (InterruptedException e){}
        piecewidth = WholeImage.getWidth(this) / piecesx;
        pieceheight = WholeImage.getHeight(this) / piecesy;
        System.out.println("Image has loaded.  X=" +
                           WholeImage.getWidth(this) + " Y=" +
                           WholeImage.getHeight(this));
        imageset = new Image[totalpieces];
        for (i = 0; i < totalpieces; i++)
             filter = new CropImageFilter(GetPieceX(i) * piecewidth,
                                          GetPieceY(i) * pieceheight,
                                          piecewidth, pieceheight);
             imageset[i] = createImage(new
                                       FilteredImageSource(WholeImage.getSource(),
                                                           filter));
        // Set up the mouse listener
        System.out.println("Adding mouse listener.");
        addMouseListener(this);
        // Complete mixing the image parts
        System.out.println("Displaying puzzle.");
        PaintScreen = -1;
        repaint();
        while (end != null)
          try {
             Thread.sleep(100);
          } catch (InterruptedException e){}
     }Any help to where im going wrong would be much appreciated. Thanks!

Answer 1

ive seen this one many times and it dosent work for me! Shouldnt the second parameter of the getImage(...) method not include the 'http://..." part as that what getDocumentBase() is for, returning the URL of the page the applet is embedded in? I have tried using code like this and event getting a printout of the doc/code base into the console to make sure my images are in the right place (.gif images), and nothing's happening, null pointer every time!
{code}
Image image;
public void init() {
// Load image
image = getImage(getDocumentBase(), "http://hostname/image.gif");
public void paint(Graphics g) {
// Draw image
g.drawImage(image, 0, 0, this);
{code}
ps this code is from the site mentioned above
Edited by: Sir_Dori on Dec 8, 2008 8:37 AM