They announced it yesterday at the Google Campfire ’09 (here and here) and it is today on the Google App Engine blog: Java is now supported on Google App Engine!
It comes with a set of Eclipse plugins to test and deploy Java servlets, using JDO or JPA to support database access. Of course, the database behind this is BigTable, which means that a lot of relational features are not available, but it scales!
Go there to get you started, or, if you want to know if your preferred framework will play well with GAE, go to the “Will it play in App Engine” page.
That’s good news! Especially because we may start having more and more Java applications outside of the corporate walls.
Yes Google, YES!