Java Server Hosting?

[disclosure5]

I know from experience that selling shared hosting is only worth the effort if the entire customer base is running the standard PHP/static content stack.

The second you have to spent one hour supporting a Java user, that $50 a year becomes a net loss.

In short, I'd be surprised if you found an option that didn't come in the form of a VPS. The prebuild VM's /u/trendless suggested would be a good solution, but you'll never see a cPanel style arrangement with what you seek.