Google Web Toolkit

Java development framework that makes writing AJAX applications.

[iProgram]

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.

[code.google.com...]

[vincevincevince]

That's very interesting. I've been avoiding AJAX because there's been no hand-holding to make it as fast as non-AJAX, but now..