There is often a need to check licenses to protect your work. I didn't find any maven plugin on the Internet to help you maintain these license headers. By maintaining, I mean checking if the header is here or not, generating a report and of course having the possibility to update/reformat missing license headers.
Please advise if Github provides any such License Check, especially open source jar files. A similar check is there for jar vulnerability, but not sure about license checks.
No, GitHub doesn't provide a built-in feature to check the licensing of your project files or dependencies. There is some code to determine the license a repository falls under, see our help documentation for details.
I hope that helps.