This works because the two are closely related. In Java, nested classes are categorized as either static member classes or inner classes. Inner classes are non-static member classes, local classes ...

Library authors would prefer to use interfaces to expose opaque abstractions; abstract classes were meant to be an implementation aid, not a modeling tool. (See Effective Java, "Prefer interfaces ...

A cleaner approach is to introduce a third-party Java library such as Google Guava or Apache Commons, both of which provide a Multimap class to address the issue. The Guava entry looks very similar to ...

I'm purely a Java guy, and we'll eventually get to a pure Java library, but in the meantime I'd like to test using something like JNA. I'm wanting to keep this under a linux environment.