If you don't very own the domain it is achievable to use your GitHub coordinates as a group id. For example, my GitHub account title is maciejwalkowiak, so I am able to use io.github.maciejwalkowiak as a group id. You need to use Maven to publish Java packages into a registry https://louisuqjdu.blogerus.com/58240473/rumored-buzz-on-jav-free-new