Design Patterns are very popular in IT Industry among software developers. Design Patterns are a well-proven common solution for generic problems provided by highly expert IT Engineers.
Few of the common benefits of using design patterns are:
- Design Pattern can be used to develop reusable, more robust, and highly maintainable code so that We can reduce maintenance costs.
- Since Design Patterns are already provided solutions for common problems by IT experts so it makes our code easy to understand and we can add new functionalities without breaking other parts of the application.
- Design Patterns help us to create software components in a loosely coupled manner so that components easily UNIT Tested(Writing Junit test would be easier).
Java Design Patterns are commonly divided into three categories:
Creational Design Patterns
A creational design pattern provides the way to create an Object of a Class in the best possible way for specific situations.
Abstract Factory Pattern
Structural Design Patterns
A Structural pattern provides a good way to assemble objects and classes into larger structures while keeping these structures flexible and efficient.
Behavioral Design Patterns
A Behavioral pattern provides a solution for better interaction between different objects and how to provide loose coupling and flexibility to extend our application easily.
Chain of Responsibility Pattern
Collection Of System Design Interview Questions and Answers
Design Pattern Interview questions based on differences
How does the Singleton pattern differ from the Factory pattern in Java?
Can you explain the difference between the Observer pattern and the Decorator pattern in Java?
That’s all about Java Design Patterns
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