I am trying to write the simple hello world program by java sun. The thing
that the implemnetation of the interface is in seperate class than the
server. The tutorial on the web just shows you that the implementation
returns a simple string "hello world". What if I want to return ...

I've read about callbacks at
http://www.iona.com/support/docs/e2a/asp/5.0/corba/migration/html/InteropCx3.html
and now I'm wondering if anyone knows if any of the open source Java
ORB's supports Bi-Directional IIOP.