Design Patterns in Java

S.O.L.I.D Principle

• The Open Closed Principle
  • The article describes the open closed principle which is one of the object oriented design principles.
• Don’t Repeat Yourself
  • The article explains and demonstrates don’t repeat yourself principle with the help of a real life example
• Single Responsibility Principle
  • The article explains the concept of single responsibility principle with the help of an example and how to identify and apply it to code
• Liskov Substitution Principle
  • if class A is a subtype of class B, we should be able to replace B with A without disrupting the behavior of our program.
• Aggregation Example
  • An example of aggregation association is provided with clear explaination of the concept
• Composition Example
  • Concept of composition is explained using simple real life example along with corresponding java classes.

Design Pattern:

Creational Patterns:

• Singleton:
  • The article gives singleton design pattern implementation using enums in java. It explains advantages of enums demonstrates with simple example
• Factory Method :
  • The article provides factory method implementation as defined by GoF and Head First Design Patterns book. It elaborates factory method with concrete example
• Abstract Factory:
  • The article gives abstract factory pattern implementation in java with comprehensive definition and example. It is elaborate with lucid example and diagrams.
• Prototype:
  • This article helps understand prototype design pattern implementation using java with the help of cloneable interface in java.
• Builder:
  • The article describes builder design pattern and illustrates it with detailed and simple example. Diagram for bulider design pattern is explained in detail.

Behavioral Patterns:

• Chain Of Responsibilities:
  • This article illustrates chain of responsibilities pattern implementation with the help of simple example and self explanatory class diagram.
• Command:
  • The article helps understand command design pattern implementation in java and elaborates with self explanatory class diagram for both pattern and example.
• Mediator
  • The article helps understand mediator design pattern implementation with the help of its generic diagram and a simple example of chat application.
• Observer:
  • The article provides a short and real life example of observer pattern implementation along with elaborate diagram for both design pattern and example.
• Strategy :
  • The article provides strategy pattern implementation along with definition and a simple example.Class diagram for pattern as well as example is demonstrated
• Template Method :
  • This article helps understand template method implementation with a simple example along with generic class diagram with everyday life example
• Visitor:
  • This article provides visitor design pattern implementation along with a generic class diagram and example class diagram.

Structural Patterns:

• Adapter:
  • This article helps us understand adapter design pattern implementation with the help of a generic class diagram and another with a simple example
• Bridge:
  • The article helps understand bridge design pattern implementation with self explanatory generic as well as example class diagram.
• Composite:
  • Provides composite design pattern implementation with the help of generic as well as example class diagram and easy to understand example
• Decorator:
  • The article covers yet another creational design pattern. It gives decorator pattern implementation in java along with class diagram and its example
• Flyweight :
  • This article helps understand flyweight design pattern implementation and elaborates it with simple example along with its class diagram
• Facade:
  • The article helps understand facade design pattern conceptually and with the help of class diagram and real life coding example.
• Memento:
  • This article gives an interesting example of memento design pattern implementation along with its generic class diagram and elaborate example.
• Proxy :
  • proxy design pattern implementation is explained thoroughly in this article with the help of simple generic class diagram and separate for example.
• State:
  • The article gives a very interesting example of battle game soldiers and tries to explain state design pattern implementation along with class diagram