'java.net.Socket java.net.ServerSocket.accept()' on a null object reference : <p><strong>Server Socket throwing this error and app completely crashes.</strong> I called this thread in my onCreate() method . When activity is running for the first time it is good but after finishing and get back to this activity is giving below error.      </p>

<p><em>'java.net.Socket java.net.ServerSocket.accept()' on a null object reference</em> </p>

<pre><code> private class ClientConnectionThread implements Runnable {
        ServerSocket serversocket;

        public ClientConnectionThread(){
            try{
                serversocket = new ServerSocket(5005);
                serversocket.setReceiveBufferSize(1024*1024);
                Log.v("BoardCastRunning","BoardCast Server Waiting");
            }catch (IOException ex){
                Log.v("BoardCastError",ex.toString());
            }


        }

        @Override
        public void run() {

            while(true){
                try{

                    streamClientSocket = serversocket.accept();
                    Log.v("BoardCast","New Connection");
                    videoBroadcastSockets.add(streamClientSocket);
                    runOnUiThread(new Runnable() {
                        @Override
                        public void run() {
                            Utils.shortToast(context,
                                    "Client connected from: "
                                            + streamClientSocket.getInetAddress().getHostAddress()
                                            + " " + streamClientSocket.getPort());


                        }
                    });
                }
                catch(IOException ex){
                    Log.v("BoardCastError",ex.toString());
                }


            }
        }
    }
</code></pre>
