How do I run serverside code?

MIT App Inventor Help
1

I was hoping there was a way to add java as an extension, or maybe another language. I have seen extensions for web server offered here but they don't give access to the code. Thanks for the information.

2

There is no server side code as such.

You can either:

Create your own extensions written with java, then build the extension and apply to AppInventor as it is

or

Download AI2 sources, build your own version of AppInventor locally, and edit/add to the code that way

You can of course contribute PRs (changes/updgrades/additions) to the AI2 code through github

There are probably other things you can do...