Best server-side framework for heavy AJAX Java application

Question

There are zillions of Java web application frameworks.

95% were designed before the modern era of AJAX/DHTML-based development, and that means these new methods are

Answer 1

If you're starting from scratch. I'd have to say Google Web Toolkit. I have to say it is incredibly powerful. You get keep using most of your Java tools. Plus, you don't have to duplicate code that exists on both the server and the client, it just gets compiled differently for each area.