I built a special Spark version with this tuturial.
Everything ist compiled, and i can start the application with the startscripts for Windows and Linux.
Now i will try to build an EXE file for my Windows machine with Launch4J.
I defined an output file and entered the path to the startup.jar file.
Now my problem is, that nothing happens. I can build the EXE file without any warnings,
but if i double-click on the EXE file nothing happens.
I think, that there must be further settings in Launch4J, but i dont know.