This book is definitely not written for beginners! Firstly, the examples are "opaque", on the other hand, there is no gradual introduction into the framework. I also miss an instruction on how to lift to other environments (Eclipse etc) turning. What JAR files are required? How can / have to enable servers in different application these? For this, the book provides no answers!
Too bad, because thereby obstruct the "inventor" of the way into practice.
