Mostly Used Design Patterns

We all know there are total 23 regular design patterns so far which are about design and interaction of objects, as well as providing communication platform concerning elegant, reusable solutions to commonly encountered programming challenges. According to individual behavior and functionality, there are three categories:
Creational Factory, Structural Factory, Behavior Factory.

Pattern Lists

• Highly Used (7): Singleton, Composite, Façade, Proxy, Iterator, Observer, Template.
• Medium Used (6): Abstract Factory, Factory, Strategy , Adapter , Command , State .
• Low Used (4) : Builder, Bridge , Decorator , Chains of Responsibility .
• Seldom Used (6) : Prototype, Flyweight , Interpreter , Mediator , Memento , Visitor

Combined pattern: MVC

MVC pattern is a combined pattern including three patterns:

• The relationship between Model and View is Observer


• The views can be nested: Composite


• The relation ship between View and Controller is Strategy

Creational Factory:

• Abstract Factory:

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• Factory:


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• Singleton: ****


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Structure Factory:

• Adapter:


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• Composite:***


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• Decorator:


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• Façade: ***((the current system has some subsystems which can be both simple and complicated .(image placeholder)

• Proxy:***


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• Behavioral Factory:


• Command pattern:


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• Iterator pattern: ***

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• Observer Pattern:***


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• State:


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• Strategy:


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• Template Method:***


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• Strategy


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