This week's giveaway is in the EJB and other Java EE Technologies forum. We're giving away four copies of EJB 3 in Action and have Debu Panda, Reza Rahman, Ryan Cuprak, and Michael Remijan on-line! See this thread for details.
ok im not sure if this is something that can be done by servlets but what im trying to do is go from SuperGroup.Bar.com to Bar.com/webApp/groups/SuperGroup I would like a dynamic way of being able to add hosts so i can have a backend that i can add these 'groups' and as soon as i click create group on my webapp I should be able to goto the newGroup.Bar.com
What you are looking for is more of a DNS issue than java in my opinion. But you can create a servlet (granted you are running as as superuser and have the permissions to do so) that creates the webapp directory and edits the server.xml file (Tomcat) or equiv in your app server and then restartes your server to allow this virtual host to be used. Depending on your application server or container though there is probably a tool already build for you to do this.