Is a “master preferences” class a good idea?

Question

I have a class that manages user preferences for a large software project. Any class in the project that may need to set or retrieve a user preference from a persistent store i

Answer 1

The JSR-10 (java.util.prefs.*) API uses a factory method with a Class parameter to create Preferences instances. That way the API can store preferences from different classes belonging to the same package in a single file.