default_options="--branding jjazzlab -J-Djjazzlab.version=2.2.0 -J-Dplugin.manager.check.new.plugins=true -J-Dplugin.manager.check.interval=EVERY_DAY --fontsize 16"
C:\Users\MyName\AppData\Roaming\jjazzlab\2.2
For ex. on Linux /home/MyName/.jjazzlab/2.2