B4J is really interesting with a Raspberry as you can develop/test under Windows and then move to the PI for execution... with only a small knowledge of the Linux world.
However, I have an issue with the process of photos on the PI : in this case, B4J calls some functions which are using JavaFx which is not installed with the Debian system.
Of course, I installed JavaFX on the PI but I don't arrive to "link" it to the B4J program. Error message is
java.lang.NoClassDefFoundError: javafx/embed/swing/SwingFXUtils
If somebody knows the solution, I am interested.