public static void main(String[] args) {
    try {
      container = new AppGameContainer(new TranparencyTest());
      container.setMinimumLogicUpdateInterval(20);
      container.setDisplayMode(800, 600, false);
      container.setClearEachFrame(false);
      container.start();

    } catch (SlickException e) {
      e.printStackTrace();
    }
  }