Instruct: Classify Amazon reviews into positive or negative sentiment
Query: A dated intro

In its day, this must have been a useful text. It certainly served as a good introduction to what Hibernate is and does. The examples in this book use Ant 1.5 and Hibernate 2.x. If you still use Ant, you're probably using 1.8.x. Hibernate 4.1.1 has been released as of this writing. I enjoyed the challenge of migrating the examples from Ant 1.5 to Maven 3.0, and hunting down replacements for Hibernate idioms, methods, and fields that were deprecated in version 3.x and removed in 4.x. Take the time to do this, and you'll still get plenty of value out of this book. If you're not interested in doing homework, you're better off looking for a more recent publication date. Also, while this book reads nicely front-to-back, it is difficult to use as a reference due to headers that say meaningless things like, 'How do I do that?' over and over instead of meaningful things like, 'How to generate schema".