I am using Jrun 3.

Thanks for you answer but it does not answer the question. There seems to be
no clear way to map a url to a web application. Everyone can give me half
answers and instructions on how to do things I can already do. But that is
still a far cry from actually setting up a multi-homed environment where
Jrun applications are associated with a corresponding web site. This
seemingly simple thing to do is very near black magic ( in the world of
J2ee)  since no one can actually seem to do it.

I will have to recommend to clients to avoid J2ee and wait for .NET because
the cost of setting it up is too high. I am sure with time we can get it to
work but let me tell you, when compare days it requires to set up J2ee vs.
the minutes it does .NET, it is an easy choice.

S