ModuleFinder can't find one module

[Alan Bateman]

On 31/01/2023 12:52, Alex Orlov wrote:
> :
> To create module finder I do:
> ModuleFinder jarModuleFinder = 
> ModuleFinder.of(jarModulePaths.toArray(new Path[jarModulePaths.size()]));
> To check found modules I do:
> final Set<String> foundModulePaths = new HashSet<>();
> for (ModuleReference reference : moduleFinder.findAll()) {
>             var path = reference.location().get().getPath();
>             foundModulePaths.add(path);
>  }
>

findAll will find occurrence of all modules so it might be that the 
module in jakarta.servlet.jsp.jstl-2.0.0.jar has the same name as a 
module that is one of the preceding elements of the module path. Can you 
try this:

java --module-path <dir>/jakarta.servlet.jsp.jstl-2.0.0.jar --list-modules

and you should see the module in output. Then change your loop above to 
print the module names and see if it gets printed.

BTW: In the above you are using URI::getPath. That returns the decoded 
path component of the file URI - you can't reliably use this as a file 
path, I think the code you want here is Path.of(uri).toString().

-Alan