static class MyStateChangedListener implements JCoServerStateChangedListener

    {

        public void serverStateChangeOccurred(JCoServer server, JCoServerState oldState, JCoServerState newState)

        {

            // Defined states are: STARTED, DEAD, ALIVE, STOPPED;

            // see JCoServerState class for details. 

            // Details for connections managed by a server instance

            // are available via JCoServerMonitor

            System.out.println("Server state changed from " + oldState.toString() + " to " + newState.toString() +

                    " on server with program id " + server.getProgramID());

        }

    }

MyThrowableListener eListener = new MyThrowableListener();

        server.addServerErrorListener(eListener);

        server.addServerExceptionListener(eListener);