Thanks Kenneth for using Updatecenter.
UC 1.0 require desktop/windowing environment (true for tray option too). UC 1.0 effort was more focused towards developers. Unfortunately, UC 1.0 it does not support the use-case where user wants to run UC without windowing/desktop environment. Updatecenter 2.0 will be geared towards production deployments and will address this. For information on Updatecenter 2.0 please visit
https://updatecenter2.dev.java.net/
Thanks
Rajeshwar
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