Can not access object's properties(methods) from within the run method! Java Multithreading

Question

I have the following code in ServerConnectionManager:

public class ServerConnectionManager implements Runnable {

    private DatagramPacket receivedPacket;
             


        

Answer 1

You need to create a new DatagramPacket per receive if you want to start a new thread to handle it. Otherwise one thread is synchronized on it during receive() while the other thread is trying to call getPort(). The design is invalid in any case, as the receive() will overwrite everything in the previously received datagram while the thread is trying to process it.