RMI tutorials, use of UnicastRemoteObject

Question

Hi all,
I've succeeded in making the Sun tutorial run (http://java.sun.com/docs/books/tutorial/rmi/index.html), which is good.
However, I don't really understand the use of UnicastRemoteObject.exportObject() in the ComputeEngine:
String name = "Compute";
Compute engine = new ComputeEngine();
Compute stub = (Compute) UnicastRemoteObject.exportObject(engine, 0);
Registry registry = LocateRegistry.getRegistry();
registry.rebind(name, stub);Why is this done? In all other books and tutorials on RMI they always just do something like
String name = "Compute";
Compute engine = new ComputeEngine();
Naming.rebind(name, engine);I tried this second version to see the difference and it throws an exception in this case (but not in other bookexamples I've seen).
Could somebody explain what the difference is and why this difference is important in the case of the Sun tutorial?
Regards,
JB

Answer 1

Thx for your post. Could you please elaborate? I'm new to RMI so I don't understand your answer.
Further questions which might help me see te light:
1) Is there a difference between the use of Naming.rebind(name, object) or LocateRegistry.getRegistry().rebind(name, object)?
2) Why does the Sun-tutorial bind the stub while other tutorials bind the original remote object to the registry?
I am reading the API docs, but still not understanding.
JB