private Image createThumbnail(Image image) {

  int sourceWidth = image.getWidth();

  int sourceHeight = image.getHeight();

  int thumbWidth = 64;

  int thumbHeight = -1;

  if (thumbHeight == -1)

    thumbHeight = thumbWidth * sourceHeight / sourceWidth;

  Image thumb = Image.createImage(thumbWidth, thumbHeight);

  Graphics g = thumb.getGraphics();

  for (int y = 0; y < thumbHeight; y++) {

    for (int x = 0; x < thumbWidth; x++) {

      g.setClip(x, y, 1, 1);

      int dx = x * sourceWidth / thumbWidth;

      int dy = y * sourceHeight / thumbHeight;

      g.drawImage(image, x - dx, y - dy,

          Graphics.LEFT | Graphics.TOP);

    }

  }

  Image immutableThumb = Image.createImage(thumb);

  return immutableThumb;

}