> Apart from EJB being a "biz" bean what functional differences exist between
> the two?
(I'm not a guru, so I could be wrong...)
Normal beans are just plain old software components. They let you
take code out of your JSP page so your web designers won't get
confused, and they can communicate with other JSP pages that live in
the same JVM on your application server.
EJBs are specialized components that can count on having a variety of
services available from an EJB container. Those services make the
components well suited for distributed enterprise computing. The EJB
containers make it possible for EJBs to communicate with processes on
other machines in a secure and orderly way. If you wanted to do the
same sorts of things on an MS system, you'd probably use MTS. And if
you wanted to make a scalable JSP system, you might need to use EJBs
so that pages running in different JVMs can communicate with one
another.
I looked at an EJB book at the store, but the first thing it said was
that it was a hard subject to tackle, so I decided to spend more time
with JSP and plain old beans before I dove in to EJBs. They do seem
to be easier to figure out than MTS, though, although I say that as a
person who hasn't learned either technology.
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