throw new Exception ("Error: Server already running on this port");
throw new Exception ("Error: Server already running on this port: " + portNumber);
    private void checkRunning () throws Exception {	try {	    java.net.Socket socket = new java.net.Socket ("localhost", rmiPort);	} catch (Exception x) {	    return;	}	// if we got so far, another server is already running on this port and db	throw new Exception ("Error: Server already running on this port");    }