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An open source Java software development framework for writing AJAX applications Google Web Toolkit (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 helps 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. Here are some key features of "Google Web Toolkit": · Create a Widget by compositing other Widgets. Lay out Widgets automatically in Panels. Send your Widget to other developers in a JAR file. · 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. · 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. · 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. · Your GWT applications automatically support IE, Firefox, Mozilla, Safari, and Opera with no browser detection or special-casing within your code in most cases. · GWT's direct integration with JUnit lets you unit test both in a debugger and in a browser...and you can even unit test asynchronous RPCs. · Easily create efficient internationalized applications and libraries. · 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). · We are in the process of building support for using Google APIs in GWT applications. Initially, we are providing support for Google Gears, the recently-launched developer product that extends the browser to allow developers to make web-based applications function even while offline. If you would like to download this library please visit the open source project. We are planning to add support for other Google APIs; if you'd like to help, please check out Making GWT Better. · All of the code for GWT is available under the Apache 2.0 license. If you are interested in contributing, please visit Making GWT Better. What's New in This Release: New Features: · Development Mode · Speed Tracer · Developer Guided Code Splitting · Compiler Optimizations · Draft Compile · Declarative User Interfaces · Layout Panels · Bundled Resources via ClientBundle · HtmlUnit for Testing Bug Fixes: · Issue 427: TextArea#getSelectedText() returns the wrong value in Internet Explorer · Issue 633: Added File#setEnabled to enable or disable FileUpload widgets · Issue 1574: Added Cookies#remoteCookie to programmatically remove cookies · Issue 1585: Clicking on a Button in a Form no longer submits the forms automatically · Issue 1633: Loading malformed cookies no longer result an an exception · Issue 1771: Added RpcRequestBuilder to encapsulate logic needed to build and an RPC request · Issue 3102: HandlerManager#removeHandelr has be de-deprecated by popular request · Issue 3404: Added support for Class#getSimpleName() · Issue 3892: Multiple GWT applications on the same page can now preview events · Issue 3903: Host HTML pages no contain a noscript tag to warn users if JavaScript is disabled · Issue 3936: Empty switch statement no longer causes compilation error RichTextArea has also been enhanced: · Issue 1211: Support for undo/redo in RichTextArea · Issue 1433: Support for inserting arbitrary HTML into a RichTextArea · Issue 1441: No cursor in RichTextArea until users start typing (Firefox) · Issue 2185: Support for JustifyFull in RichTextArea · Issue 3176: Ensure that design mode is properly set in Firefox · Issue 3503: Consistent focus behavior across browsers

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