Google Brings App Engine's Pros and Cons to Java
"Google has broadened their Google App Engine (GAE) support to include Java in addition to Python. This addition brings a large set of Java ecosystem related tools, frameworks, and languages (like JRuby and Clojure) along for the ride. However, it also imposes a number of limitations on the GAE Java applications to further Google's ability to scale and cluster them with minimal effort"
We will contact you as soon as possible.