Rating: 

experts in their own field. the book assumes prior

knowledge of the topics and does not intend to take

a beginner from ignorance to knowledge.

this book is intended not for beginners but some

experts in the Java domain designing enterprise

level systems or even maintaining them for system

performance and ehancements.

The book is well written and all the potential

gotchas and the mistakes commonly done in application

design and development are outlined with appropriate

alternate solutions.

The book covers all aspects of java and ejb application

development and their best practices.

Overall, this a good book to have and will be used

by experienced java developers and the not so

experienced.