spring roo is a RAD (Rapid Application Development), it's just a tool to help you reduce the time of setting up your java web project, configuring your spring configuration, writing your DAOs and a lot of cool stuff.
of course you don't have to use it or you can use it just as a first step in setting up a standard spring web application and for configuring database and the like.
What are you doing? You are supposed to be reading this tiny ad!
the new thread boost feature brings a LOT of attention to your favorite threads