Hi, I'm LITTLE confused.
I've been study from the manning "EJB in Action", book, at first, and that was starting point of my introduction with
EJB.
However, in the previous preparation for SUN's certifications I found very useful the collection of "Head First" literature. Now I have start to study "Head First EJB". And, at very beginning, I found some miss-matches between these two books ( something like since "Head First EJB", has been written, some modifications are made in the ejb spec.
For Example, i 'HFE' is denoted that Session bean class MUST implements SessionBean interface, where in ejb specs. I found it's quite optional (in EJB in Action, it's not even mentioned).
Second, in HFE is stressed that also that Session bean class MUST provide TWO additional interfaces, where one containing business method, MUST extends EJBObject interface, and the other one used for making instance of first, MUST extends EJBHome or EJBLocalHome interfaces, where bot interfaces MUST throws RemoteExceptions?
Since NONE of this is mentioned in EJB in Action, who should I listening to, and what should I do (who has right)???
I'm completely stucked-up, until I resolve this mystery. Please, someone answer to me soon.
Thanks!