This is a starter activity for Google AppEngine. After you complete this activity, other challenges to build interesting stuff in Java on Google AppEngine will become available to you.
Google App Engine is a free platform that lets you run your web applications on Google infrastructure. App Engine applications are easy to build, easy to maintain, and easy to scale as your traffic and data storage needs grow. With App Engine, there are no servers to maintain: You just upload your application, and it is ready to serve your users.
It's a great way for students to learn web technologies, cloud computing, data processing, data mining, user interfaces, and a whole bunch of other cutting edge technologies.