Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: Not much of use to a real time developers

The book covers lot about EJB theoretically, talks about patterns . This information is good for a new Developer, but certainly not justifies real time environment development. Moreover, the seamless presentation gets disturbed as too many authors implementing their skills with different approach.But i must say that, this book comes handy for a begineers..