A Gang of Four behavioral design pattern that lets an object alter its behavior when its internal state changes, by delegating state-specific behavior to separate state objects rather than to a large conditional statement.
Facts
Core PrincipleAllows an object to alter its behavior when its internal state changes. 2 Connections
Associated With
Erich Gamma, Pioneers Erich Gamma co-authored the 1994 Design Patterns book that named and catalogued the State pattern among the original 23.
In Field
Sources
1. Wikipedia: Design Patterns (book)
Wikimedia FoundationLead sectionQuote, Lead section
Design Patterns: Elements of Reusable Object-Oriented Software (1994) is a software engineering book describing software design patterns.
2. State pattern, Wikipedia
IntroductionQuote, Introduction
The state pattern is a behavioral software design pattern that allows an object to alter its behavior when its internal state changes.
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