gistfile1.java

JarFile jarFile = new JarFile(file);

  			//We load the basic game Plugin configuration
				ZipEntry configFile = jarFile.getEntry("gameplugin.yml");

				//Does the config file exists?
				if (configFile != null) {
					YamlConfiguration gamePlugin = YamlConfiguration.loadConfiguration(jarFile.getInputStream(configFile));

					//Is the configuration a valid one?
					if (!gamePlugin.contains("main-class") || !gamePlugin.contains("name")) {
						ultimateGames.getMessageManager().log(Level.SEVERE, "Game " + file.getAbsolutePath() + " contains a invalid gameplugin.yml file!");
						jarFile.close();
						continue;
					}

					//We try to laod the main class..
					pluginClassLoader.addUrl(file.toURI().toURL());

					Class<?> clazz = pluginClassLoader.loadClass(gamePlugin.getString("main-class"));

					//Is the class a valid game plugin?
					if (GamePlugin.class.isAssignableFrom(clazz)) {
						ultimateGames.getMessageManager().log(Level.INFO, "Loading " + gamePlugin.getString("name"));
						GamePlugin plugin = (GamePlugin) clazz.newInstance();
					} else {
						ultimateGames.getMessageManager().log(Level.SEVERE, "Game " + gamePlugin.getString("name") + " got a invalid main class!");
					}
				}