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 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.
Release Notes for 1.5.3
Fixed Issues
RPC requests no longer fail on the embedded Android web browser
Leaf TreeItems now line up with their non-leaf siblings
Removing the last child node from a TreeItem no longer creates extra margins on the left
HTTPRequest no longer uses POST instead of GET on some IE installs because of incorrect XHR selection
Compiler now uses a more reliable check to prevent methods with local variables from being inlined
getAbsoluteTop()/Left() can no longer return non-integral values
Time.valueOf() no longer fails to parse "08:00:00" or incorrectly accepts "0xC:0xB:0xA".
Update：http://code.google.com/intl/zh-CN/webtoolkit/releases/release-notes-1....
Official Network：http://code.google.com/webtoolkit
Official download：
Windows：http://google-web-toolkit.googlecode.com/files/gwt-windows-1.5.3.zip
Mac OS X：http://google-web-toolkit.googlecode.com/files/gwt-windows-1.5.3.zip
Linux：http://google-web-toolkit.googlecode.com/files/gwt-linux-1.5.3.tar.bz2
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