Am new to EJB. Do not know anything about that. I know servlet and jsp. Current version of EJB is 3.0.
Is EJB2.1 base of EJB3.0? Should i buy old version of Head First EJB just to clear basic concepts of EJB.
Will it be useful to learn old version, and only update certain new topics of 3.0 version.
We will have a future if we save Nature!