How to transfer objects over network using java

Question

what is the library should I use ? what are the functions that help me?

Answer 1

ObjectOutputStream/ObjectInputStream.

The whole logic is approximately as follows. Adjust by the demands of your app.

Send:

ByteArrayOutputStream baos = new ByteArrayOutputStream();
ObjectOutputStream oos = new ObjectOutputStream(baos);
oos.writeObject(objectToSend);
oos.close();

byte[] bytes = baos.toByteArray();
socket.write(bytes);

Receive:

ObjectInputStream ois = new ObjectInputStream(socketInputStream);
MyObject mo = (MyObject)ois.readObject();