fileIO_rwObject

private void writeObject(File file, Object object) {

		try {
			FileOutputStream fos = new FileOutputStream(file);
			ObjectOutputStream oos = new ObjectOutputStream(fos);
			oos.writeObject(object);
			oos.close();
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

	private Object readObject(File file) {
		Object returnlist = null;
		try {
			FileInputStream fis = new FileInputStream(file);
			ObjectInputStream ois = new ObjectInputStream(fis);
			returnlist = ois.readObject();
			ois.close();
		} catch (Exception e) {
			e.printStackTrace();
		}
		return returnlist;
	}