Actually, to clear up my post, I've read that the most common way to return
values from a database is to iterate through a ResultSet and creating an
object that holds a copy of the data of each row. Then placing the objects
in a collection. What happens when you're returning a table of 20 or 30
columns. That's quite a bit of typing. Is there a simplier way to do this?

I use Castor.  While it's not a JAXB implementation, it has a builder
that will create your DTOs by parsing an XML schema.  

For DAO, I then just write hibernate mappings for these objects.  We
have a custom doclet for doing this but I don't use it.  It's too easy
just to do it, the automation becomes an extra layer of complexity that
we don't need.