The document discusses Google Web Toolkit (GWT), a tool for developing AJAX-enabled rich web applications in Java. GWT compiles Java code to JavaScript that runs in browsers. It allows developing applications in Java with full IDE support and debugging while targeting browsers. GWT includes a widget library, internationalization support, and ways to integrate with existing web applications and Google App Engine. It also describes how to create user interfaces, handle client-server communication asynchronously, and use advanced features like UI binder and Speed Tracer.

1. Google Web Toolkit Greece -GTUG Athens, 2011/03/22 Christos Stathis

5. Widgets http://gwt.google.com/samples/Showcase/Showcase.html#!CwTree

6. Widgets http://gwt.google.com/samples/Mail/Mail.html

20. GWT designer

21. Speed Tracer