B4J Question FCM Push Notifications on B4J client...

I did not saw a B4J Client for FCM in the past.
I even did not found any Information using a short google search.

I guess there is no B4J Client available.

This is not possible. Firebase / FCM / APN only work with Android and iOS devices.

Probably too late for answering (only 4,5 years later - but if you work as a turtle it might be of use ). A good idea to receive a push notification in B4J would be to have an intermediate Android device which receives the FCM notification and posts an MQTT string to the B4J app which has both MQTT server and client connected to it and thus it can receive it.