One confusing new feature is the ability to import a class as static.
so if you have a class Foo and it has a method p() and q()
then if you do
import static Foo;
suddenly you can get access to these methods without having to specify the host static class if it were not a static import, e.g. you can just go p(something);
it should not be used when inheritance is tricky, but rather to extend with some "primitives" like a language extenstion
of course, it can be a useful way to get your enums and consts without having to always de-reference them off the class name, and that is it's best application.