The Java Power Tools book got a five-star review on Javalobby: here are some quotes:

• "I was just blown away seeing how thoroughly John covered each and every tool"
• "The book is enjoyable, extremely well organized and covers a wide range of open source tools needed for any successful software development life cycle. I would recommend Java Power Tools to anyone writing Java."
• "Java Power Tools can be used as an introduction to various technologies and also as a complete and easy-to-use reference work...I have not read another book that combines the two aspects as thoroughly as Java Power Tools does."