Heroku adds suport for Java: Heroku for Java.

Take note of how simple a basic Java web app can be. Sure it’s not Sinatra or Flask, but it is still mighty simple.

Folks who claim that ‘Java is dead’ or that it should die, aren’t facing up to where it shines and what it provides. It has a place alongside Python and increasingly JavaScript in my tool belt.

I’m a happy polygot programmer and have used Groovy, and custom DSLs in Java to help speed application development by enabling those who are closest to change, to be able to harness it.