Posted by gouessej on Mar 11, 2020; 8:49pm
URL: https://forum.jogamp.org/FailedDownloadException-on-Mojave-tp4040416p4040434.html

It's a dead end. Webstart and applets are too difficult to maintain. I used Webstart for a very long time, I worked around numerous bugs and limitations. Nowadays, only a very few end users still have a JRE installed on their computers. Packaging a software for OS X is challenging, the stupid Gatekeeper gets in your way. I advise you to look at the alternatives, JPackage for example. I use my own packager because it's more cross-platform than Oracle's solution, I can create native packages for Windows and OS X under GNU Linux :)