code: public static boolean isFullyTransparent(BufferedImage image) {
  		boolean transparent = true;
  		for (int x = 0; x < image.getWidth(); x++) {
  			for (int y = 0; y < image.getHeight(); y++) {
  				transparent = isTransparent(image, x, y);
  				if (!transparent) {
  					break;
  				}
  			}
  			if (!transparent) {
  				break;
  			}
  		}
  		return transparent;
  	}
docs: Check if the image is fully transparent, meaning it contains only
  transparent pixels as an empty image
  
  @param image
  image
  @return true if fully transparent