Related Terms: Abstract class, Superclass, Metaclass , Subclass, Parent class, Base class, Abstract base class, Member class, Concrete class, Derived class, Inner class, Nested class, Extends, Static method, Mixin class, Static class, Singleton, Instance of a class, Mixin, Protected, Class method, Class hierarchy, Inheritance , Enum, Class instance, Association class, Member, Instance method, Class variable, Abstract, Class definition, Super , Proxy class, Constructor, Extend, Open class, Adapter class, Class object, Class , Static, Copy constructor, Anonymous class, Class invariant, Member variable, Specialization, Class factory, Container class, Multiple inheritance, Factory method, Class level