Exactly Alton! The term "top level nested class" refers to a static inner class, and the book on
Java Certification by Khalid Moghul also uses the same to explain the concept of different types of nested/inner classes.
If I may quote from the book
A top level nested class or interface is similar to a top level or interface, but it is defined as a static member of an enclosing top level class or interface (Section 7.2)
The term is used because the behaviour of static inner classes is hardly any different from the normal top level classes.