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Vijay Sahaya Raja
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The Gang of Four Design Patterns Simplified: All the 23 design patterns explained in simple language with use cases and java code Paperback – October 28, 2021

by Vijay Sahaya Raja (Author)
3.2 3.2 out of 5 stars 14 ratings
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The Gang of Four Design Patterns are often hard to get .


This book provides an easier explanation of all the 23 design patterns with use cases implemented in Java and with link to GitHub.

Topics covered:

Creational :

Deals with how to create objects.

  • Singleton – Create a single instance of an object.
  • Prototype– Use an existing object by cloning it.
  • Factory Method – Delegate creation of an object to another object.
  • Abstract Factory – Delegate creation of a group of related objects to another object.
  • Builder – Delegate creation of a complex object to another object.
Structural:

Deals with how to structure objects.

  • Adapter – Make two incompatible interfaces work together.
  • Bridge – Separate abstraction and implementation.
  • Composite – Treat part-whole hierarchy the same way.
  • Decorator – Add responsibilities to an object dynamically.
  • Facade – Provide a single interface for a group of related operations.
  • Flyweight – Reuse objects than creating new ones.
  • Proxy – Protect access to an object.
Behavioral
  • Deals with how to communicate between objects.
  • Chain of Responsibility – Allow different objects to carry out a responsibility.
  • Command – Encapsulate requests as separate objects.
  • Mediator – Act as a broker for communication between objects.
  • Template – Provide basic template of an algorithm to implement.
  • Strategy – Encapsulate different algorithms using separate objects which can be chosen at run time.
  • State – Encapsulate state specific behavior in a separate object.
  • Observer – Intimate group of objects when a change occurs.
  • Memento – Allow to revert an object’s state.
  • Iterator – Provide a generic way to iterate through collection of objects.
  • Interpreter – Represent a grammar using an object.
  • Visitor – Add new responsibilities to an object without changing its existing behavior.


Note : The original book by the Gang of Four was referred for these posts.

Previous page
  1. Print length
    288 pages
  2. Language
    English
  3. Publication date
    October 28, 2021
  4. Dimensions
    6 x 0.65 x 9 inches
  5. ISBN-13
    979-8755588317
  6. See all details
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Product details

  • ASIN ‏ : ‎ B09KN7X2C7
  • Publisher ‏ : ‎ Independently published (October 28, 2021)
  • Language ‏ : ‎ English
  • Paperback ‏ : ‎ 288 pages
  • ISBN-13 ‏ : ‎ 979-8755588317
  • Item Weight ‏ : ‎ 1.1 pounds
  • Dimensions ‏ : ‎ 6 x 0.65 x 9 inches
  • Customer Reviews:
    3.2 3.2 out of 5 stars 14 ratings

About the author

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Vijay Sahaya Raja

Vijay Sahaya Raja

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By profession , a Technical Manager passionate about programming and technology.

As a hobbyist , a writer and dabbler of different creative pursuits.

Customer reviews

3.2 out of 5 stars
3.2 out of 5
14 global ratings

Top reviews from the United States

There are 0 reviews and 3 ratings from the United States

Top reviews from other countries

Adrian
2.0 out of 5 stars Could be much better
Reviewed in the United Kingdom on June 16, 2022
Verified Purchase
Font is extremely small and is not consistent, sometimes small, sometimes extremely small.

Extremely difficult to read in places due to gray font on what paper.

No page numbers. Code samples are not complete implementations , at least not for abstract factory.

It’s a pity because if not for these issues it would be an extremely useful companion to the GOF book which uses Small talk as the implementation examples.
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Vinith
5.0 out of 5 stars Everything that you need
Reviewed in India on May 4, 2022
Verified Purchase
Design patterns is a very vast topic and it is hard to find a quick and easy-to-understand reference especially when you have less time to prepare for an interview. This book is something which simplifies learning , clarifies your doubts and helps you understand some of the major concepts related design patterns. I used this effectively during my preparation. Thanks to the author for his efforts to put all this together with clarity
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