This article gives readers an overview of the hidden features of the Google Web Toolkit (GWT), which is used for developing Ajax-based Web applications in Java. It is aimed at those familiar with the basics of GWT.

Asynchronous gavaScript and uML (AgAu) is not a language or new technology, but a combination of known technologies such as HTML, uML and gavaScript. It has been combined to serve users in a better and faster way. Being asynchronous is the key; all user actions are handled in parallel. In traditional Web applications, all user actions were handled sequentially. AgAu requires HTML for creating and loading pages, gavaScript for altering page content, uMLLgSlN for data communication, and serverside business logic. AgAu-based Web applications reduce unnecessary server calls and the reloading of the entire page for small user requests or actions. • GWT provides a compiler, which converts all code written in gava into gavaScript. Because of this, developing applications with cross-browser compatibility becomes easier. It has a way of maintaining a history of accessed application rRLs, letting you use the browser’s corward/_ack button. aebugging of client-side code is possible. Since we are developing in gava, debugging the AgAu application is possible during development, using a native Iab.

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