Where can I find good information on EJBs?

Question

Java

Hello. I'm looking for a good source for learning EJB topics in Java, what can anyone advise (except for the oracle documentation on the official website).

Answer 1

If you are interested in EJB2, there is nothing better than Head First EJB from Kathy Sierra (by the way, it is freely available)
And if you are interested in the EJB3 specification, then in addition to the off-documentation, I saw the book Beginning EJB 3 (also probably in the public domain) from Jonathatn Wetherbee.

Answer 2

There is a book EJB3 in action , for example, but off. the documentation is better.