AJAX for Java developer

IBM has put an interesting online article about  DWR (Direct Web remoting) technology…

In the simplest terms, DWR is an engine that exposes methods of server-side #Java objects to #JavaScript code. Effectively, with DWR, you can eliminate all of the machinery of the Ajax request-response cycle from your application code. This means your client-side code never has to deal with an XMLHttpRequest object directly, or with the server’s response. You don’t need to write object serialization code or use third-party tools to turn your objects into XML. You don’t even need to write servlet code to mediate Ajax requests into calls on your #Java domain objects.
Read more at IBM developerworks