Сервер:
final int PORT = 1099;
            try {
                Registry registry = LocateRegistry.createRegistry(PORT);
            } catch (RemoteException e) {
                e.printStackTrace();
            }

try {
            Registry registry = LocateRegistry.getRegistry(1099);
            Stub stub = new StubImpl();
            UnicastRemoteObject.exportObject(stub, 1099);
        } catch (RemoteException e) {
            e.printStackTrace();
        }