jpackage not working as expected

[dserrada]

The jpackage dosen't work because this application uses a library (log4j-core)
that is not modularized (log4j-api is modulorized but log4j-core is only a
automatic module). Jlink, used by jpackage, don't support automatic module.

The following gradle plugin https://badass-jlink-plugin.beryx.org/releases/latest/ helps with
modularization of automatic modules or non modules library, but don't work with jdk16