General J2EE: What are the design patterns used for J2EE architecture?

  1. Wanted to know what are the design patterns for designing J2EE architecure as well as EJB and any specific reasons or commnets on the design patterns used. From where can i get more information on design patterns used for J2EE & EJB architectures?.
  2. Please visit http://java.sun.com/blueprints/code/index.html
    and See Sun'Pet Store Application.
  3. - Here is an excellent book by Floyd:

    - And you can get xPetStore, a lightwight version of Sun PetStore with Floys patterns, at http://www3.sympatico.ca/htchepannou