private static Object getClassInstance(String clzName) {
		Object obj = null;
		try {
			Class cls = Class.forName(clzName);
			obj = (Object) cls.newInstance();
		} catch (ClassNotFoundException cnfe) {
			System.out.println("ClassNotFoundException:" + cnfe.getMessage());
		} catch (Exception e) {
			e.printStackTrace();
		}
		return obj;
	}