Java Support in Google AppEngine

Java Support in Google AppEngine

http://googleappengine.blogspot.com/2009/04/seriously-this-time-new-language-on-app.html

There is also another good blog from Groovy about writing for AppEngine using Groovy
http://blog.springsource.com/2009/04/07/write-your-google-app-engine-applications-in-groovy/