Yesterday, Google released its Web Toolkit (GWT):
"(...) a Java software development framework that makes writing AJAX applications easy. With GWT, you can develop and debug AJAX applications in the Java language using the Java development tools of your choice. When you deploy your application to production, the GWT compiler translates your Java application to browser-compliant JavaScript and HTML. (...)
Google Web Toolkit ships with a Java-to-JavaScript compiler and a special web browser that helps you debug your GWT applications. For details on how they work, check out the GWT product overview."
Update: running examples are available here (with source code).
Update 2006/6/6: an assortment of interesting links is available on the GWT blog.
