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  • They can make their code more flexible, reusable and maintainable
  • Refactor existing designs to use design patterns
  • They will learn with different scenario where then can apply the design patterns for the solutions of complex problems
  • Reason about applicability and usability of design patterns

Course Overview:

This course provides an overview of all the Gang of Four (GoF) design patterns as outlined in their seminal book, together with modern-day variations, adjustments, discussions of intrinsic use of patterns in the language.

What are Design Patterns?

Design Patterns are reusable solutions to common programming problems. They were popularized with the 1994 book Design Patterns: Elements of Reusable Object-Oriented Software by Erich Gamma, John Vlissides, Ralph Johnson and Richard Helm (who are commonly known as a Gang of Four, hence the GoF acronym).

The original book was written using C++ and Smalltalk as examples, but since then, design patterns have been adapted to every programming language imaginable: C#, Java, PHP and even programming languages that aren't strictly object-oriented, such as JavaScript.

What Patterns Does This Course Cover?

This course covers all the GoF design patterns. In fact, here's the full list of what is covered:

  • Creational Design Patterns: Builder, Factories (Factory Method and Abstract Factory), Prototype and Singleton

  • Structural Design Patterns: Adapter, Bridge, Composite, Decorator, Façade, Flyweight ...many more.

  • Behavioral Design Patterns: Chain of Responsibility, Command, Interpreter, Iterator,  Observer, State, Strategy and Template Method many more.

Presentation Style

This course is presented as a (very large) series of live demonstrations along with the concepts  being done in Java language. Most demos are as project, so you can download the attached zipped folder of the lesson and run it in Eclipse IDE of your choice.

In the last section you will find some important points to remember always.(Rule of  Thumbs).

  • Basic Java knowledge is required(To understand the demo code)
  • Good understanding of object-oriented design principles
  • A computer with the JDK 8 or 11 (hopefully) an Eclipse IDE
  • Software engineers
  • Architects
  • Tech Leads
  • Experienced software developer
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  • Section 1 : Introduction 3 Lectures 00:04:56

    • Lecture 1 :
    • Lecture 2 :
    • Who am I
      Hello everyone, I am Ravi Kumar Singh(Oracle certified Java developer), your new instructor for the course titled "GoF Design Patterns with Java". I have done my post graduation from IIT Roorkee. I have around 9 Years of experience in Software development industry. I have been exposed to multiple domain like Asset management, Fintech domain, Education domain and travel domain. I am passionate about the subject I teach. I enjoy educating students in my best possible way. You all are free to ask as many queries as you have. I only consider a job done when it makes a point to the maximum number of learners. Now, I would like to THANK YOU all of you for enrolling your self in this course. We will learn together and grow together. Happy Learning!.
    • Lecture 3 :
    • Why Design Patterns
  • Section 2 : Types Of Design Patterns 1 Lectures 00:04:02

    • Lecture 1 :
    • Types of Design Patterns
  • Section 3 : Creational Design Patterns 10 Lectures 00:43:54

    • Lecture 1 :
    • Singleton design Pattern concept
    • Lecture 2 :
    • Singleton Design Pattern Implementation
    • Lecture 3 :
    • Factory Pattern Concept
    • Lecture 4 :
    • Factory Pattern Implementation
    • Lecture 5 :
    • Abstract Factory Pattern Concept
    • Lecture 6 :
    • Abstract Factory Pattern implementation
    • Lecture 7 :
    • Prototype Design Pattern concept
    • Lecture 8 :
    • Prototype Design Pattern Implementation
    • Lecture 9 :
    • Builder design Pattern concept
    • Lecture 10 :
    • Builder design Pattern implementation
  • Section 4 : Structural Design Pattern 12 Lectures 01:31:01

    • Lecture 1 :
    • Adapter Design Pattern concept
    • Lecture 2 :
    • Adapter Design Pattern Implementation
    • Lecture 3 :
    • Bridge Design Pattern Concept
    • Lecture 4 :
    • Bridge Design Pattern implementation
    • Lecture 5 :
    • Composite Design Pattern concept
    • Lecture 6 :
    • Composite Design Pattern implementation
    • Lecture 7 :
    • Decorator Design Pattern concept
    • Lecture 8 :
    • Decorator Design Pattern implementation
    • Lecture 9 :
    • Façade Design Pattern concept
    • Lecture 10 :
    • Façade Design Pattern Implementation
    • Lecture 11 :
    • FlyWeight Design Pattern concept
    • Lecture 12 :
    • FlyWeight Design Pattern implementation
  • Section 5 : Behavioral Design Pattern 12 Lectures 01:11:46

    • Lecture 1 :
    • Chain of Responsibility Design pattern concept
    • Lecture 2 :
    • Chain of Responsibility Design pattern implementation
    • Lecture 3 :
    • Iterator Design Pattern implementation
    • Lecture 4 :
    • Iterator Design Pattern concept
    • Lecture 5 :
    • Observer Design Pattern concept
    • Lecture 6 :
    • Observer Design Pattern implementation
    • Lecture 7 :
    • Strategy Design Pattern concept
    • Lecture 8 :
    • Strategy Design Pattern implementation
    • Lecture 9 :
    • Template Design Pattern concept
    • Lecture 10 :
    • Template Design Pattern implementation
    • Lecture 11 :
    • Memento Design Pattern concept
    • Lecture 12 :
    • Memento Design Pattern implementation
  • Section 6 : SOLID Design Patterns 6 Lectures 00:29:53

    • Lecture 1 :
    • SOLID introduction
    • Lecture 2 :
    • Single responsibility Principle(SRP)
    • Lecture 3 :
    • Open-close Principle (OCP)
    • Lecture 4 :
    • Liskov Substitution Principle(LSP)
    • Lecture 5 :
    • Interface Segregation Principle (ISP)
    • Lecture 6 :
    • Dependency Inversion Principle(DIP)
  • Section 7 : DRY(Don't Repeat yourself) Principle 1 Lectures 00:06:46

    • Lecture 1 :
    • DRY Principle
  • Section 8 : What Next... 0 Lectures

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I have been in software development since 2011. I have worked with most of the big MNCs and product based in India. I am a passionate programmer and love to share the knowledge what i have gained with the work. I have completed my certification in java 8 in this year i.e 2021.
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