java.net.SocketException socket is closed

Question

I am sending Object for client to server modifying that object at server side and resending it to client. Sending object form client to server is fine its working properly b

Answer 1

java.net.SocketException socket is closed

This exception means that you closed the socket, and then continued to try to use it.

os.close();

And you closed it here. Closing either the input or the output stream of a Socket closes the other stream and the Socket.