Developing AJAX applications with Java

I was perusing one of my favorite Java sites (OnJava) and found a few interesting articles about developing AJAX applications in Java, "Developing AJAX Application the Easy Way" and "Introduction to AJAX". DWR looks to be interesting and plan to do some research about with it. The rate of change with AJAX in the past few months has been very fast paced. The Java community is jumping on the AJAX wave just like everyone else this summer.