For anyone considering Groovy, or just interested in seeing what all of the fuss is around the features of dynamic languages, this book will deliver.
Gregory Pierce, JavaLobby.org
Not just a language guide, this book presents the clear, readable, and enjoyable specification of Groovy ... you should definitely read it.
Alexander Popescu, Mindstorm
A real page-turner. Brilliant examples ... all other programming books I know really fall behind.
Dr. Gernot Starke
Excellent code samples ... very readable.
Scott Shaw, ThoughtWorks
Great, logical focus on language features.
Norman Richards, author of XDoclet in Action
Destined to be the definitive guide. First rate!
Glen Smith, Bytecode Pty Ltd.
Examples are clear, complete, and they work!
David Sills, JavaLobby.org
Among the top five Manning books. For me personally, it’s also a perception-changing and influential book.
Weiqi Gao
The examples are the strongest part of the book—all assumptions are checked using assertions, and they have been run before printing so one can trust that they’re faultless. Explanations are fine-grained so even inexperienced developers can read it with understanding.
Marek Zganiacz, Comarch SA
Very readable, engaging, and does a great job of slotting Groovy into the broader world of software development. Highly recommended.
Pan Pantziarka
Real computer LITERATURE.
Johannes Link