public static void addDirectoryToClassPath(String pDirectory) throws Exception {
		File lDirectoryToAdd = new File(pDirectory);
		if(!lDirectoryToAdd.exists() || !lDirectoryToAdd.isDirectory()) {
			throw new Exception(pDirectory + " doesn't exist or isn't a directory!");
		} else {
			Thread lCurrentThread = Thread.currentThread();
			ClassLoader lOldClassLoader = lCurrentThread.getContextClassLoader();
			URL[] lDirectoryURL = new URL[] {lDirectoryToAdd.toURI().toURL()};
			URLClassLoader lNewClassLoader = new URLClassLoader(lDirectoryURL, lOldClassLoader);
			lCurrentThread.setContextClassLoader(lNewClassLoader);
		}
	}

Class.forName("classname);