// add the downloaded jars and natives to classpath
URLClassLoader classLoader = updateClassPath(path);
// switch to LWJGL Applet
switchApplet(classLoader);

protected void updateClassPath(String path) throws Exception {
    state = STATE_UPDATING_CLASSPATH;
    percentage = 95;

    Class[] parameters = new Class[] {URL.class};

    // modify class path by adding downloaded jars to it
    URL[] urls = new URL[urlList.length];
    for (int i = 0; i < urlList.length; i++) {
        urls[i] = new URL("file:" + path + getFileName(urlList[i]));
    }

    URLClassLoader loader = new URLClassLoader(urls, getClass().getClassLoader());

    if (debugMode) {
        sleep(2000);
    }

    // add natives files path to native class path
    System.setProperty("org.lwjgl.librarypath", path + "natives");

    // Make sure jinput knows about the new path too
    System.setProperty("net.java.games.input.librarypath", path + "natives");

    return loader;
}

protected synchronized void switchApplet(ClassLoader loader) throws Exception {
    state = STATE_SWITCHING_APPLET;
    percentage = 100;

    if(debugMode) {
        sleep(2000);
    }
    
    Class appletClass = loader.loadClass(getParameter("al_main"));
    lwjglApplet = (Applet) appletClass.newInstance();
  
    lwjglApplet.setStub(this);
    lwjglApplet.setSize(getWidth(), getHeight());
  
    setLayout(new BorderLayout());
    add(lwjglApplet);

    state = STATE_INITIALIZE_REAL_APPLET;
    lwjglApplet.init();
   
    state = STATE_START_REAL_APPLET;
    lwjglApplet.start();

    // fix for issue with applet not showing up in firefox
    setVisible(false);
    setVisible(true);
}