Subscribe to Firebird events using a Jdbc driver for connection?

Question

I am writing an application in a B4J environment with data connection on Firebird.

https://www.b4x.com/b4j.html

B4J uses the Firebird Jdbc driver for communication between the application and the db server. I would need to link the application code to 'events' generated by triggers defined on Firebird. How to do, from code B4J, to subscribe to Firebird 'events'?