The book is aimed at programmers who want to use GWT to create interfaces for their professional web applications. It concentrates on the serious side of AJAX: creating powerful, productive applications for browser platforms. GWT AJAX Programming shows you how to create reliable user interfaces that enhance the user experience.
GWT is an open source Java software development framework that makes writing AJAX applications like Google Maps and Gmail easy for developers who don't speak browser quirks as a second language. Writing dynamic web applications today is a tedious and error-prone process; you spend 90% of your time working around subtle incompatibilities between web browsers and platforms, and JavaScript's lack of modularity makes sharing, testing, and reusing AJAX components difficult and fragile.
GWT lets you avoid many of these headaches while offering your users the same dynamic, standards-compliant experience. You write your front end in the Java programming language, and the GWT compiler converts your Java classes to browser-compliant JavaScript and HTML.