Design Patterns

Design Patterns are nothing but proven solutions to recurring problems.

1. Some favorite design patterns

     Creational Patterns
        - Prototype
             - used to create objects by cloning other objects
                   
        - Factory

        - Singleton

     Structural Design Patterns

      They show how the objects are composed, is there an inheritance between them, or is one object composed in another object, interfaces present


  • Proxy Pattern
           

           e.g credit card is the proxy of the Bank Account
  • Decorator
    • Adds more functionality without opening the object
    • Wraps the decorator another class, it is a component and has a component
      • Advantage - allows you to have multiple combinations among classes
  • Adapter
    • Making two interfaces which are incompatible compatible
  • Facade
    • Simplify the interactions with  too many working complex objects and complex interactions, something you want to call
    • Hides complex behavior

      Behavioral Design Patterns      e.g Iterator, Command

      Architectural Design Patterns
     e.g MVC pattern


















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