RMI lookup works but method invocation not

Question

UPDATE:

The problem is, that i\'m using a kind of 2-way connection.

On client side, this works:

String a = this.lobby.getMsg();
         


        

Answer 1

The error message is

java.rmi.ConnectException: Connection refused to host: ;

I would check you can ping that server and telnet to the service point.