There is literature about Java 2 EE design patterns but it seems those patterns would only be used in design of modules/ layers. As the Java 2 EE architecture seems very much in agreement with MVC.
Rehan Zahoor wrote:After searching a little on the internet , http://www.corej2eepatterns.com/, is found.
That went with an older version of J2EE. (I think J2EE 1.4). A lot is obsolete now that we have dependency injection and the like.
Rehan Zahoor wrote:These patterns are not as well known as ,Gang of 4 patterns, are. Would you be kind and answer in terms of Gang of four patterns.
That Gang of Four patterns aren't meant to be architectural level patterns. It wouldn't make sense to answer in terms of them.