Why is it allowed to have several modules with the same name?

[Gunnar Morling]

Hi,

So far it was my assumption that the module system would reject
multiple modules with the same name to be present.

But this seems not to be the case; if I have two versions of a module JAR
on my module path -- i.e. two modules which have the same module name and
export the same set of packages -- the java command does not complain (nor
does javac or jlink). Is this an expected behavior?

Thanks,

--Gunnar