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About: State Design Pattern

Module by: Dung Nguyen, Stephen Wong. E-mail the authors

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Name: State Design Pattern
ID: m17225
Language: English (en)
Summary: Many real-life systems change the way they behave as they change states. It is desirable for object models of such systems to be able to change their behaviors as if they are changing types dynamically. The state design pattern is a design solution for this problem of dynamic reclassification. The key element is to abstract the state dependent behavior of the system in question as an abstract class and encapsulate each concrete variant behavior as a concrete subclass.
Subject: Science and Technology
Keywords: design, dynamic, pattern, reclassification, state
License: Creative Commons Attribution License CC-BY 2.0
Authors: Dung Nguyen (dxnguyen@rice.edu), Stephen Wong (swong@rice.edu)
Copyright Holders: Dung Nguyen (dxnguyen@rice.edu), Stephen Wong (swong@rice.edu)
Maintainers: Dung Nguyen (dxnguyen@rice.edu), Stephen Wong (swong@rice.edu), Alex Tribble (prat@rice.edu)
Latest version: 1.5 (history)
First publication date: Jul 15, 2008 4:15 pm GMT-5
Last revision to module: Oct 22, 2009 11:55 am GMT-5
Module XML: m17225_1.5.cnxml

Version History

Version: 1.5 Oct 22, 2009 11:55 am GMT-5 by Stephen Wong
Changes: 
Fixed some formatting
Version: 1.4 Oct 22, 2009 11:18 am GMT-5 by Dung Nguyen
Changes: 
none
Version: 1.3 Jul 22, 2008 11:49 am GMT-5 by Dung Nguyen
Changes: 
remove empty paragraphs
Version: 1.2 Jul 17, 2008 2:35 pm GMT-5 by Dung Nguyen
Changes: 
fix the link to Question
Version: 1.1 Jul 17, 2008 11:15 am GMT-5 by Dung Nguyen
Changes: 
new module

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American Chemical Society (ACS) Style Guide:

Nguyen, D.; Wong, S. State Design Pattern, Connexions Web site. http://cnx.org/content/m17225/1.5/, Oct 22, 2009.

American Medical Assocation (AMA) Manual of Style:

Nguyen D, Wong S. State Design Pattern [Connexions Web site]. October 22, 2009. Available at: http://cnx.org/content/m17225/1.5/.

American Psychological Assocation (APA) Publication Manual:

Nguyen, D., & Wong, S. (2009, October 22). State Design Pattern. Retrieved from the Connexions Web site: http://cnx.org/content/m17225/1.5/

Chicago Manual of Style (Bibliography):

Nguyen, Dung, and Stephen Wong. "State Design Pattern." Connexions. October 22, 2009. http://cnx.org/content/m17225/1.5/.

Chicago Manual of Style (Note):

Dung Nguyen and Stephen Wong, "State Design Pattern," Connexions, October 22, 2009, http://cnx.org/content/m17225/1.5/.

Chicago Manual of Style (Reference, in Author-Date style):

Nguyen, D., & Wong, S. 2009. State Design Pattern. Connexions, October 22, 2009. http://cnx.org/content/m17225/1.5/.

Modern Languages Association (MLA) Style Manual:

Nguyen, Dung, and Stephen Wong. State Design Pattern. Connexions. 22 Oct. 2009 <http://cnx.org/content/m17225/1.5/>.