The book starts off with an overview, perhaps necessary, of the so-called Java EE and GlassFish. What's the big deal? Well, there has been a corporate reshuffling and relabelling. What was for over 10 years J2EE [Java 2 Enterprise Edition] is now just Java EE [Enterprise Edition]. And the venerable JBoss, hailing from 1999 or earlier, is now WildFly [sic]. I kid you not. RedHat, which owns JBoss, decided on a seriously variant relabelling. At least we are told that GlassFish is the official Java EE 7 implementation. Whew! The point is that you are urged to use GlassFish version 4.0 [or newer perhaps by the time you read this], is that it lets you debug your codebase against official specs. For example, the long chapter 2 looks at Java Server Faces and Ajax. As well as coding to HTML 5, to make markups and have JSF parts being instantiated as HTML 5 pages. Another chapter takes us into Java Persistence API [JPA]. Which is an object oriented compatible way to easily get at data in a relational database. The code snippets have a slew of import statements for JPA. The usual necessary verbiage. A talented programmer might wonder how to simplify such boilerplate, for that is what it is, in a future better version. The snippets often also have getters and setters. Trivial to understand. Perhaps too trivial. You could reasonably wonder if the author might have refrained from providing these examples. Too much space is wasted on them. More effort would have been better spent on more non-trivial snippets. Ok, in later chapters, we do see comments like "getters and setters omitted for brevity". Good.