GiA - Chapter 9

I couldn't find a more detailed TOC on manning's site for the book. Could one of you provide a bit of information about what is contained in Chapter 9 - Working with the GDK as well as why it is mentioned as "JRE improvements (GDK)"?

Thanks.

Groovy adds methods to standard Java classes (like Object and List). This is part of the magic you get with dynamic languages. These methods are called the GDK.

Here are the details http://groovy.codehaus.org/groovy-jdk.html