Newbie using Google App Engine

I've just started using Google App Engine and I have a few questions about it. I hope you can help me:

1. Once my Java web application is running on Google App Engine. What if one day I decide to run it on my own server. Which programs/services would I need? Is it difficult to configure?

2. I have a Javascript code that I would like to store on Google Application Engine, so that external webpages can run it directly. Is it possible? Otherwise could I deploy a Java application on Google App which re开发者_如何学Pythonturns this Javascript code? How could an external site ask on "execution time" for this code and run it?

THANKS!!

1. AppScale supports Java and allows users to deploy and host their own Google App Engine applications

2. Of course you can, although GAE is not meant to be used as a CDN.
   Have a look to Static Files and Resource Files documentation.

1. It depends on what services you actually use. Take a look at AppScale, it will facilitate running your application on your own servers. I would also suggest looking at TyphoonAE (Python only), to see another software 'stack' providing similar services.

2. See the section on static files and resources in the docs.