String hash = checksumImage(i); imageCache.put(hash, i); images.put(key, i);
Image[] imgs = new Image[8]; imgs[0] = internImage(i); images.put(key, imgs);
    public void overlayImage(Object key, Image i) {        String hash = checksumImage(i);        imageCache.put(hash, i);        images.put(key, i);    }