Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Sound advice on Java design

I want to commend you on your excellent book, 'Java Design.' Compared with others, your instruction seems more direct, immediately applicable, and less mystical for my purposes. For example, the principle of favoring composition over inheritance has really opened my eyes, especially when trying to decouple my designs. Good, practical, substantial stuff! I appreciate the concise presentation of information in your book. In these days of 1000-page tomes on every aspect of programming and design, it's refreshing to see someone who can say more with less!