Where do resource files go in a Gradle project that builds a Java 9 module?

Question

As of IDEA 2018.2.1, the IDE starts error-highlighting packages \"not in the module graph\" from dependencies that have been modularized. I added a module-info.java

Answer 1

Beside @Slaw's answer (thanks to him), I had to open the package that contains the resources to the caller's module. As follows (moduleone.name module-info.java):

opens io.fouad.packageone to moduletwo.name;

Otherwise, the following would return null:

A.class.getResource("/io/fouad/packageone/logging.properties");

considering that class A is in module moduletwo.name and the file logging.properties is inside module moduleone.name.

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Alternatively, moduleone.name could expose a utility method that returns the resource:

public static URL getLoggingConfigFileAsResource()
{
    return A.class.getResource("/io/fouad/packageone/logging.properties");
}