Behavioral Patterns, also known as Behavioral Design Patterns, are a category of design patterns in software development. These patterns describe best practices for addressing common communication and interaction problems between objects in a program.
Behavioral Patterns focus on how classes and objects collaborate to organize the behavior and responsibilities of a program. They provide a way to improve communication and interaction between different parts of a system without tightly coupling the components. This enhances the flexibility and maintainability of the software.
There are various Behavioral Patterns, including:
Observer: Allows defining a dependency mechanism so that objects are automatically notified when the state of another object changes.
Strategy: Enables defining different algorithms or behaviors within an object and making them interchangeable at runtime without modifying the interface.
Command: Encapsulates a command as an object, allowing parameterization, queuing, or logging of requests.
Template Method: Defines the basic structure of an algorithm in a method, with certain steps being overridden in subclasses.
Chain of Responsibility: Allows sending requests along a chain of potential receivers until one handles the request.
Iterator: Enables sequential access to the elements of a collection without exposing its internal representation.
State: Allows an object to change its behavior when its internal state changes.
These patterns serve as proven solutions that developers can use to address recurring design problems in software development. They promote modularity, flexibility, and extensibility in software and facilitate its maintenance and evolution.
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