Can I run two separate java apps that can both write to the same gpio pin ?

[RobLeighton67]

I have two apps, both need to access a pin to turn on , or flash, an LED via a gpio pin (#28) - previous incarnations on Pi Zero W using pi4j seemed to work OK, as the apps never typically need to access the gpio simultaneously (one is used to indicate shutdown started, so the other is closed almost immediately).

Pi Zero 2W - dietpi OS 9.2 - jre17.

[EAGrahamJr]

It would be simpler to just use a single application, to be honest. That way you're sure you won't have pin conflicts and it seems it would just be easier to manage (and put less stress on the small device by only running a single JVM).

[RobLeighton67]

Tests basically confirm that, unlike with Pi4j, I can't.
Get a GPIO pin busy exception when provisioning in the second app.