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Design Patterns

Design Patterns are very popular among software developers. A design pattern is a well described solution to a common software problem. I have written extensively on java design patterns. You can download PDF eBook (130+ pages) by subscribing to our newsletter.

Java Design Patterns Some of the benefits of using design patterns are:

• Design Patterns are already defined and provides industry standard approach to solve a recurring problem, so it saves time if we sensibly use the design pattern. There are many java design patterns that we can use in our java based projects.
• Using design patterns promotes re usability that leads to more robust and highly maintainable code. It helps in reducing total cost of ownership (TCO) of the software product.
• Since design patterns are already defined, it makes our code easy to understand and debug. It leads to faster development and new members of team understand it easily.

Java Design Patterns are divided into three categories – Creational, Structural, and Behavioral design patterns. This post serves as an index for all the java design patterns articles I have written so far.

Creational Patterns

These design patterns provide a way to create objects while hiding the creation logic, rather than instantiating objects directly using new operator. This gives program more flexibility in deciding which objects need to be created for a given use case.

1. Factory Pattern
2. Abstract Factory Pattern
3. Singleton Pattern
4. Prototype Pattern
5. Builder Pattern

Structural Design Pattern :

these design patterns show you how to glue different pieces of a system together in a flexible and extensible fashion. Structural patterns help you guarantee that when one of the parts changes, the entire structure does not need to change.

1. Adapter Pattern
2. Bridge Pattern
3. Composite Pattern
4. Decorator Pattern
5. Facade Pattern
6. Flyweight Pattern
7. Proxy Pattern

Behavioral Design Pattern

A behavioral pattern abstracts an action you want to take from the object or class that takes the action. By changing the object or class, you can change the algorithm used, the objects affected, or the behavior, while still retaining the same * basic interface for client classes. * Chain Of Responsibility Pattern

• Command Pattern
• Interpreter Pattern
• Iterator Pattern
• Mediator Pattern
• Memento Pattern
• Observer Pattern
• State Pattern
• Strategy Pattern
• Template Pattern
• Visitor Pattern

Refrences 👍

• https://www.journaldev.com/1827/java-design-patterns-example-tutorial
• https://www.geeksforgeeks.org/software-design-patterns/
• https://www.tutorialspoint.com/design_pattern/factory_pattern.htm