How do you crop an image?

I thought I got it and again, I failed.
public void actionPerformed(ActionEvent evt) {
        if (evt.getActionCommand().toLowerCase().trim().equals("crop")) {
            cropPanel.setImage(
                    (BufferedImage)createImage(
                    new FilteredImageSource(cropPanel.getImage().getSource(),
                    new CropImageFilter((int)cropPanel.getClip().getX(),
                    (int)cropPanel.getClip().getY(),
                    (int)cropPanel.getClip().getWidth(),
                    (int)cropPanel.getClip().getHeight()))));
            repaint();
            hasCropped = true;
    }This constantly throws the following exception:
Exception in thread "AWT-EventQueue-0" java.lang.ClassCastException: sun.awt.image.ToolkitImage cannot be cast to java.awt.image.BufferedImage
        at com.ppowell.tools.imagetools.ImageCropper.actionPerformed(ImageCropper.java:180)I was under the impression that I'm using java.awt.Image, where did sun.awt.image.ToolkitImage come from? I can't figure out how to cast this correctly either, what do I do?
Thanx
Phil

Got it, thanx
         * Perform crop
         * <a href="http://forum.java.sun.com/thread.jspa?threadID=627125&messageID=3587532">Reference</a>
        public void crop() {
            Rectangle r = ImageCropper.this.cropPanel.getClip();
            if (!this.isClipInsideImage(r)) /* AVOID RasterFormatException */ {
                return;
            // offset clip from view to raster model
            int x = (ImageCropper.this.cropPanel.getWidth() -
                    ImageCropper.this.cropPanel.getImage().getWidth()) / 2;
            int y = (ImageCropper.this.cropPanel.getHeight() -
                    ImageCropper.this.cropPanel.getImage().getHeight()) / 2;
            BufferedImage clippedImage =
                    ImageCropper.this.cropPanel.getImage().getSubimage(
                    (int)r.getX() - x,
                    (int)r.getY() - y,
                    (int)r.getWidth(),
                    (int)r.getHeight());
            ImageCropper.this.cropPanel.setImage(clippedImage);
            ImageCropper.this.cropPanel.setup();
            ImageCropper.this.validate();
         * Determine if the {@link java.awt.image.BufferedImage} has a legitimate {@link java.awt.Rectangle} clip
         * To avoid {@link java.awt.image.RasterFormatException}
         * @param r {@link java.awt.Rectangle}
         * @return {@link java.lang.Boolean}
         * <a href="http://forum.java.sun.com/thread.jspa?threadID=627125&messageID=3587532">Reference</a>
        private boolean isClipInsideImage(Rectangle r) {
            int w = ImageCropper.this.cropPanel.getWidth();
            int h = ImageCropper.this.cropPanel.getHeight();
            int imageWidth = ImageCropper.this.cropPanel.getImage().getWidth();
            int imageHeight = ImageCropper.this.cropPanel.getImage().getHeight();
            int x = (w - imageWidth) / 2;
            int y = (h - imageHeight) / 2;
            if ((int)r.getX() >= x &&
                    (int)r.getX() + (int)r.getWidth() <= x + imageWidth &&
                    (int)r.getY() >= y &&
                    (int)r.getY() + (int)r.getHeight() <= y + imageHeight) {
                return true;
            return false;
        }

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