IT SOLUTIONS
Your full service technology partner! 
-Collapse +Expand
Coder
Search Coder Group:

Advanced
-Collapse +Expand Coder Study Test
PRESTWOODCERTIFIED
-Collapse +Expand Coder Store
PRESTWOODSTORE

Prestwood eMagazine

July Edition
Subscribe now! It's Free!
Enter your email:

   ► KBRole-Based T...Coding & OOObject Orien...   Print This     
Part of the mo. lesson in the May 09 Issue of Prestwood eMag
Coder Definition Flashcard:
 A flashcard from our Coder Flashcards Library
 A definition from our Coder Definitions Page
Definition: Method Overriding

Where you define or implement a virtual method in a parent class and then replace it in a descendant class.

When you decide to declare a method as virtual, you are giving permission to derived classes to extend and override the method with their own implementation. You can have the extended method call the parent method's code too.

In most OO languages you can also choose to hide a parent method. When you introduce a new implementation of the same named method with the same signature without overriding, you are hiding the parent method.


More Info

Code:  C# Overriding (virtual, override)
Code:  Delphi Overriding (virtual, override)
Code:  Delphi Prism Overriding (virtual, override)
Code:  VB.Net Overriding (Overridable, Overrides)

Comments

0 Comments.
Share a thought or comment...
 
Write a Comment...
...
Sign in...

If you are a member, Sign In. Or, you can Create a Free account now.


Anonymous Post (text-only, no HTML):

Enter your name and security key.

Your Name:
Security key = P1154A1
Enter key:
Definition Contributed By Mike Prestwood:

Mike Prestwood is a drummer, an author, and creator of the PrestwoodBoards online community. He is the President & CEO of Prestwood IT Solutions. Prestwood IT provides Coding, Website, and Computer Tech services. Mike has authored 6 computer books and over 1,200 articles. As a drummer, he maintains play-drums.com and has authored 3 drum books. If you have a project you wish to discuss with Mike, you can send him a private message through his PrestwoodBoards home page or call him 9AM to 4PM PST at 916-726-5675 x205.

Visit Profile


Linked Certification Question(s)

The following are practice certification questions with answers highlighted. These questions were prepared by Mike Prestwood and are intended to stress an important aspect of this KB post. All our practice questions are intended to prepare you generally for passing any certification test as well as prepare you for professional work.

Beginner

1 Beginner Level Question

Question #1: Multiple Choice

Which of the following is the best definition for member overriding.

Answer:
1. 

Where different code routines with the same name are invoked based on the data types of the parameters passed or the number of parameters.

2. 

A member that is specified in a class but not implemented.

3. 

A member you can have access to without instantiating the class into an object.

4. 

Where you define or implement a virtual method in a parent class and then replace it in a descendant class.


 KB Article #101845 Counter
14534
Since 1/20/2009
Go ahead!   Use Us! Call: 916-726-5675  Or visit our new sales site: 
www.prestwood.com


©1995-2020 Prestwood IT Solutions.   [Security & Privacy]