The attached test program launches and runs fine in the unnamed module. If it is packaged and run as a modular application, then it fails to launch.

Steps to reproduce:

1. Compile the attached test program as a module:

javac --module-source-path src -d build/classes src/mymod/module-info.java src/mymod/simple/Simple.java

2. Run the test program as a modular application:

java --module-path build/classes -m mymod/simple.Simple

It will fail with the following exception:

Error: Main method not found in class simple.Simple, please define the main method as:
   public static void main(String[] args)
or a JavaFX application class must extend javafx.application.Application