I've checked the amazon.com description - 600 pages - sounds like an encyclopedia. Must have been a lot of work! Like anyone interested in a book, I'd like to know what's in it - like checking out the table of contents and flipping through pages at a book store.
I'm particularly interested in how heavy it is with examples, and how they are organized. I'm not living as a specialist - which means I'm sometimes overwhelmed by the number of options there are for building things. Nonetheless, I'm seriously into Ajax and
Java is my "real language" (Very tounge in cheek - I'm a serious JavaScript guy, willing to argue that it is a real language too.)
So, re: the examples - I often feel (as I know many do) that it would be nice in at least some situations, to be able to jump right in with a related example and just customize to get what I want. I might be leaning a bit toward lobbying authors for a better world as I see it - but for now, an answer about GWT in Action will do.