Lecture overview -- Keyboard shortcut: 'u'  Previous page: Abstract Classes -- Keyboard shortcut: 'p'  Next page: Abstract Properties -- Keyboard shortcut: 'n'  Lecture notes - all slides together  Annotated slide -- Keyboard shortcut: 't'  Textbook -- Keyboard shortcut: 'v'  Alphabetic index  Help page about these notes  Course home    Abstract classes, Interfaces, and Patterns - slide 7 : 37

Abstract classes and abstract methods in C#
An abstract Stack without data representation, but with some implemented operations
An abstract class Stack - without data representation - with a non-abstract ToggleTop method.
Go to exercise
A specialization of Stack
Go to exercise
Course and Project classes