Instruct: Classify Amazon reviews into positive or negative sentiment
Query: full of details, but presented in many different ways..

I think the authors of this book are really "Professional" in working on their projects, but not really "Professional" on how to work together to make a good book that is easy to read and understand. I'd recommend "Web developement with Java Server Pages" (from the IBM "Einstein" & the MIT "Rocketman") Save your penny my friends.