@SuppressWarnings("unchecked")
	public static <T> T readObj(String absPath) {
		ObjectInputStream ois = null;
		try {
			ois = new ObjectInputStream(new BufferedInputStream(new FileInputStream(absPath)));
			return (T) ois.readObject();
		}
		catch (IOException e) { e.printStackTrace(); }
		catch (ClassNotFoundException e) { e.printStackTrace(); }
		finally {
			try {
				if (ois != null) ois.close();
			} catch (IOException e) { e.printStackTrace(); }
		}
		return null;
	}