Version 2.0 of the Google Web Toolkit is now available
the UI's responsiveness over time and the network view shows network activity. When developers find a performance bottleneck, GWT 2 allows them to select non-essential elements in an application and make them download only as they are needed, resulting in faster application start up. Google's code page
has the Speed Tracer source code for developers to check out. Chrome 4.0, which is still under development, must be installed to use Speed Tracer. For a deeper AJAX analysis tool, developers should try dynaTrace's free AJAX Edition
and compare the tools.
The second version of GWT improves developer workflow with the UIBinder. The UIBinder method allows designers to create declarative UIs in XML and give those files to developers for loading into the application at runtime. This workflow is intended to speed up the transition of design elements into functioning applications. The UIBinder template can include an associated CSS widget style that allows widgets to be used across different applications with the same look.
GWT 2.0 also improves debugging with the new Developer Plugin. Developers can use the plugin to debug in any browser with their preferred tools (e.g. Firebug). The Development Mode works across the network to test web apps on any combination of browsers and operating systems. Development Mode can be used in any Java IDE.
To get started using the Google Web Toolkit, download DZone's GWT Refcard
Download Speed Tracer and the GWT SDK here