For Linux, I'm using jpackage to package my Java software to .deb (x64 architecture) file. For all the other Linux variants, I've a .tgz file that contains the jar file, libraries and icons of the applications.
The problem I have with Linux is named at the end of the website: "Sharing your creation". It's pages and pages of documentation that is not relevant to the packaging of your application where you can spend hours of work without finding what you want of finding out that it doesn't work for you because for example it's not on GitHub.
Hopefully jpackage was able to fix it for the .deb format.
Instead of working on more documentation, working on better and easier to use packaging tool would help.
The problem I have with Linux is named at the end of the website: "Sharing your creation". It's pages and pages of documentation that is not relevant to the packaging of your application where you can spend hours of work without finding what you want of finding out that it doesn't work for you because for example it's not on GitHub. Hopefully jpackage was able to fix it for the .deb format. Instead of working on more documentation, working on better and easier to use packaging tool would help.