Google app engine JRE Class "Black List"

Question

There is a "JRE Class White List" for the Google App Engine.

What I would really like is a "Black List" -- in other words, Java APIs that will not work on GAE. Does such a list exist? Have any developers run into problems with Java APIs on GAE?

Answer 1

It seems that they've taken more of a white-list approach: http://code.google.com/appengine/docs/java/jrewhitelist.html.

There is also more detail about the sandbox (what files it can access and so on) here: http://code.google.com/appengine/docs/java/runtime.html#The_Sandbox

The restrictions seem to be pretty intuitive (like restricted filesystem access, no JNI, etc).

Answer 2

I got a card advertising this service at Google I/O:

LTech AppEngine Compatibility Analyzer

Sounds like it might be of use to you. I have not tried it, if you do try it, please come back and comment. Thanks!