List modules in jar file

Question

I've created what I'm pretty sure is a modular jar file. But if possible, I'd like to double check. Given a jar file, is there a way to determine what modules the compiler would find within it?

Answer 1

The alternative is to use the jar --describe-module (-d for short), e.g.:

jar --file=myjar.jar --describe-module

Answer 2

You can list the modules within the jar using the following java tool command:-

java -p yourModular.jar --list-modules

Edit: You shall preferably make use of the jar command lin as suggested in @Alan's answer.