public static String serializeObject(Object obj) {

		String out = null;
		if (obj != null) {
			try {
				ByteArrayOutputStream baos = new ByteArrayOutputStream();
				ObjectOutputStream oos = new ObjectOutputStream(baos);
				oos.writeObject(obj);
				oos.close();
				out = new String(baos.toByteArray(), "UTF8");
			} catch (IOException e) {
				return null;
			}
		}
		return out;
	}

	public static Object deserializeObject(String str) {

		Object out = null;
		if (str != null) {
			try {
				byte[] bytes = str.getBytes();
				ByteArrayInputStream bios = new ByteArrayInputStream(bytes);
				ObjectInputStream ois = new ObjectInputStream(bios);
				out = ois.readObject();
				ois.close();
			} catch (IOException e) {
				return null;
			}catch (ClassNotFoundException e) {
				return null;
			}
		}
		return out;
	}