Returns an AnnotatedType object that represents the use of a type to specify the superclass of the entity represented by this Class object. (The use of type Foo to specify the superclass in '... extends Foo' is distinct from the declaration of type Foo.)

If this Class object represents a type whose declaration does not explicitly indicate an annotated superclass, then the return value is an AnnotatedType object representing an element with no annotations.

If this Class represents either the Object class, an interface type, an array type, a primitive type, or void, the return value is null.

Returns:  an object representing the superclass

Since:  1.8