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Google Web Toolkit - Build AJAX apps in the Java language
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05/21/2006, By Ajax Impact News
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Google Web Toolkit (GWT) is a 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 incompatabilities 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.
Watch Google Web Toolkit Example Projects
Download Google Web Toolkit (GWT)
Google Web Toolkit Architecture
Google Web Toolkit Features
1. Dynamic, reusable UI components - Create a Widget by compositing other Widgets. Lay out Widgets automatically in Panels. Send your Widget to other developers in a JAR file.
2. Really simple RPC - To communicate from your web application to your web server, you just need to define serializable Java classes for your request and response. In production, GWT automatically serializes the request and deserializes the response from the server. GWT's RPC mechanism can even handle polymorphic class hierarchies, and you can throw exceptions across the wire.
3. Browser history management - No, AJAX applications don't need to break the browser's back button. GWT lets you make your site more usable by easily adding state to the browser's back button history.
4. Real debugging - In production, your code is compiled to JavaScript, but at development time it runs in the Java virtual machine. That means when your code performs an action like handling a mouse event, you get full-featured Java debugging, with exceptions and the advanced debugging features of IDEs like Eclipse.
5. Browser compatible - Your GWT applications automatically support IE, Firefox, Mozilla, Safari, and Opera with no browser detection or special-casing within your code in most cases.
6. Interoperability and fine-grained control - If GWT's class library doesn't meet your needs, you can mix handwritten JavaScript in your Java source code using our JavaScript Native Interface (JSNI).
Some Good Write-Ups on the Google Web Toolkit
The Official Google Blog: Making Ajax Development Easier
Doug Schaefer: GWT Another Turning Point
Werner Schuster: Google's Plain Java Ajax Tools
Internet News: Google Cleans Ajax for Java
Richard MacManus: Google Web Toolkit Released
Google's Innovative Yet Limited Ajax Environment: GWT
 Explore Google Web Toolkit now...
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