Java EE (Java Enterprise Edition) General Discussion

Hi,
I have an application where I would like to make multiple web service interfaces (endpoints? I am new to the jwsdp terminology) served by the one servlet. Basically I want the objects servicing the different remote interfaces to be able to communicate with each other behind the scenes.
Is this possible?
If so how? How would I actually get references to the instances of the other objects so they can invoke methods?
I've tried searching the forums but I've got nothing, so even a pointer on the right search terms might be some help.
Thanks for any help.