Fake BigQuery server for tests

I am writing a simple Java server application that works against BigQuery using BigQuery Java API. Now I need a simple "end-to-end" test for that application. I'd like to use a "fake" BigQuery server for that test instead working against "real" BigQuery at Google.

My application does not use all BigQuery APIs. I can start with a "fake" BigQuery server that implements only one API for now.

I found a few "fake" BigQuery servers on the internet but they are written in Python/Go. I would prefer a JVM-based "fake" server. How would you suggest implement such a "fake" BigQuery server ?