Design Patterns in Java

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Duration
10.5 часов курса
О курсе

Course Overview

This course provides a comprehensive overview of Design Patterns in Java from a practical perspective. This course in particular covers patterns with the use of:

  • The latest versions of the Java programming language
  • Use of modern programming approaches: dependency injection, reactive programming and more
  • Use of modern developer tools such as IntelliJ IDEA
  • Discussions of pattern variations and alternative approaches

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.

The appeal of design patterns is immortal: we see them in libraries, some of them are intrinsic in programming languages, and you probably use them on a daily basis even if you don't realize they are there.

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:

  • SOLID Design Principles: Single Responsibility Principle, Open-Closed Principle, Liskov Substitution Principle, Interface Segregation Principle and Dependency Inversion Principle
  • Creational Design Patterns: Builder, Factories (Factory Method and Abstract Factory), Prototype and Singleton
  • Structrural Design Patterns: Adapter, Bridge, Composite, Decorator, Façade, Flyweight and Proxy
  • Behavioral Design Patterns: Chain of Responsibility, Command, Interpreter, Iterator, Mediator, Memento, Null Object, Observer, State, Strategy, Template Method and Visitor

Who Is the Course For?

This course is for Java developers who want to see not just textbook examples of design patterns, but also the different variations and tricks that can be applied to implement design patterns in a modern way. For example, the use of recursive generics helps us build fluent interfaces even when inheritance is involved.

Presentation Style

This course is presented as a (very large) series of live demonstrations being done in IntelliJ IDEA and presented using the Kinetica rendering engine. Kinetica removes the visual clutter of the IDE, making you focus on code, which is rendered perfectly, whether you are watching the course on a big screen or a mobile phone. 

Most demos are single-file, so you can download the file attached to the lesson and run it in IntelliJ, Eclipse or another IDE of your choice.

This course does not use UML class diagrams; all of demos are live coding. I use IntelliJ and various Maven packages where necessary.

Программа
Introduction
Introduction
An overview of the different topics that we'll encounter in this course as well as some info on the way the course is organized and a few words about the instructor (that's me!)
SOLID Design Principles
Learn about the SOLID design principles used in software engineering
Overview
Single Responsibility Principle (SRP)
The Single Responsibility Principle (SRP)states that a class should have a single reason to change (i.e., one primary responsibility). The opposite of an SRP-adhering class is an antipattern calledGodObject.
Open-Closed Principle (OCP)
A look at theOpen-Closed Principle (OCP)through the prism of the Specification pattern. Two for the price of one!:)
Liskov Substitution Principle (LSP)
The Liskov Substitution Principle (LSP)suggests that you should be able to substitute a base class for a derived class. What does it mean?Watch the lesson to find out.
Interface Segregation Principle (ISP)
The InterfaceSegregation Principle(ISP)suggests that you split interfaces into smaller interfaces so that clients don't have to implement things they don't need. Also related to the YAGNI(You Ain't Going to Need It)principle.
Dependency Inversion Principle (DIP)
The Dependency Inversion Principle (DIP)states that high-level modules should not depend on low-level modules but on abstractions. Ialso suggests a preference for depending on abstractions (interfaces/abstract classes)over concrete implementations.
Summary
Builder
Learn to implement the Builder design pattern
Gamma Categorization
A brief note about the three categories of design patterns: creational, structural and behavioral.
Требования
  • Good understanding of Java
  • Familiarity with latest Java features
  • Good understanding of object-oriented design principles
  • A computer with the latest JDK and (hopefully) an IDE
Что Вы изучите?
  • Recognize and apply design patterns
  • Refactor existing designs to use design patterns
  • Reason about applicability and usability of design patterns
Лекторы
Dmitri Nesteruk
Dmitri Nesteruk
Software/Hardware Engineering • Quant Finance • Algotrading

Dmitri is a quant, developer, book author and course author. His interests lie in software development and integration practices in the areas of computation, quantitative finance and algorithmic trading. His technological interests include C# and C++ programming as well high-performance computing using technologies such as CUDA and FPGAs. He has been a C# MVP since 2009. 

Платформа
Udemy
Курсы Udemy подойдут для профессионального развития. Платформа устроена таким образом, что эксперты сами запускают курсы. Все материалы передаются в пожизненный доступ. На этой платформе можно найти курс, без преувеличений, на любую тему – начиная от тьюториала по какой-то камере и заканчивая теоретическим курсом по управлению финансовыми рисками. Язык и формат обучения устанавливается преподавателем, поэтому стоит внимательно изучить информацию о курсе перед покупкой.
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