Geetings Gajendra,
Well before switching from tomcat , first ask yourself why are you making the switch and what are your requirements ? If you are just using a simple MVC architecture (
servlet --
jsp based ) then migrating to jboss will be an overhead. Secondly, go through the different JBOSS servers available here
http://www.jboss.org/jbossas/downloads/ since each of them ( especially 5 ,6 and 7 ) are all used in production as per need.
If you are just trying it for learning purpose , then I recommend you start with Jboss5 and then move upto Jboss7 so that you may learn the difference . Keep in mind that JBoss is a complete application server with
JEE profile , in short , it is resource hungry.
Do post back for any further queries
