1.首先物件要繼承Serializable介面

將位元組轉換為物件

    public static Object ByteToObject(byte[] bytes) {
	Object obj = null;
	try {
		// bytearray to object
		ByteArrayInputStream bi = new ByteArrayInputStream(bytes);
		ObjectInputStream oi = new ObjectInputStream(bi);

		obj = oi.readObject();
		bi.close();
		oi.close();
	} catch (Exception e) {
		System.out.println("translation" + e.getMessage());
		e.printStackTrace();
	}
        return obj;
    }
 

將對像轉換為位元組

	public static byte[] ObjectToByte(java.lang.Object obj) {
		byte[] bytes = null;
		try {
			// object to bytearray
			ByteArrayOutputStream bo = new ByteArrayOutputStream();
			ObjectOutputStream oo = new ObjectOutputStream(bo);
			oo.writeObject(obj);

			bytes = bo.toByteArray();

			bo.close();
			oo.close();
		} catch (Exception e) {
			System.out.println("translation" + e.getMessage());
			e.printStackTrace();
		}
		return bytes;
	}