void createThumbnail(String filename, int thumbWidth, int thumbHeight,                int quality, String outFilename)           throws InterruptedException, FileNotFoundException, IOException   {           // load image from filename           Image image = Toolkit.getDefaultToolkit().getImage(filename);           MediaTracker mediaTracker = new MediaTracker(new Container());           mediaTracker.addImage(image, 0);           mediaTracker.waitForID(0);           // use this to test for errors at this point:       // System.out.println(mediaTracker.isErrorAny());           // determine thumbnail size from WIDTH and HEIGHT           double thumbRatio = (double)thumbWidth / (double)thumbHeight;           int imageWidth = image.getWidth(null);           int imageHeight = image.getHeight(null);           double imageRatio = (double)imageWidth / (double)imageHeight;           if (thumbRatio < imageRatio) {               thumbHeight = (int)(thumbWidth / imageRatio);           } else {               thumbWidth = (int)(thumbHeight * imageRatio);           }                 // draw original image to thumbnail image object and           // scale it to the new size on-the-fly           BufferedImage thumbImage = new BufferedImage(thumbWidth, thumbHeight,           BufferedImage.TYPE_INT_RGB);           Graphics2D graphics2D = thumbImage.createGraphics();           graphics2D.setRenderingHint(RenderingHints.KEY_INTERPOLATION,           RenderingHints.VALUE_INTERPOLATION_BILINEAR);           graphics2D.drawImage(image, 0, 0, thumbWidth, thumbHeight, null);               // save thumbnail image to outFilename           BufferedOutputStream out = new BufferedOutputStream(new FileOutputStream(outFilename));           JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);           JPEGEncodeParam param = encoder.getDefaultJPEGEncodeParam(thumbImage);           quality = Math.max(0, Math.min(quality, 100));           param.setQuality((float)quality / 100.0f, false);           encoder.setJPEGEncodeParam(param);           encoder.encode(thumbImage);           out.close();   }