There's a great series of articles on Developer Works about Ajax by Phil McCarthy. The latest is about DWR.

DWR is an open source, Apache licensed solution consisting of server-side Java libraries, a DWR servlet, and JavaScript libraries. While DWR is not the only Ajax-RPC toolkit available for the Java platform, it is one of the most mature, and it offers a great deal of useful functionality.

It's well worth a look here.


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