If you're a Java developer looking for a nifty way to build a Facebook app and host it in the cloud, look no further. The Facebook Platform lacks native Java support, but happily the RestFB project has taken up
the slack with its Java API. Using the Google App Engine plug-in for Eclipse, RestFB, and other open source libraries, you can write a Facebook app and deploy it on the GAE platform-as-a-service. Follow along step by
step in Java Facebook applications on Google App Engine .