Book Image

Practical Design Patterns for Java Developers

By : Miroslav Wengner
Book Image

Practical Design Patterns for Java Developers

By: Miroslav Wengner

Overview of this book

Design patterns are proven solutions to standard problems in software design and development, allowing you to create reusable, flexible, and maintainable code. This book enables you to upskill by understanding popular patterns to evolve into a proficient software developer. You’ll start by exploring the Java platform to understand and implement design patterns. Then, using various examples, you’ll create different types of vehicles or their parts to enable clarity in design pattern thinking, along with developing new vehicle instances using dedicated design patterns to make the process consistent. As you progress, you’ll find out how to extend vehicle functionalities and keep the code base structure and behavior clean and shiny. Concurrency plays an important role in application design, and you'll learn how to employ a such design patterns with the visualization of thread interaction. The concluding chapters will help you identify and understand anti-pattern utilization in the early stages of development to address refactoring smoothly. The book covers the use of Java 17+ features such as pattern matching, switch cases, and instances of enhancements to enable productivity. By the end of this book, you’ll have gained practical knowledge of design patterns in Java and be able to apply them to address common design problems.
Table of Contents (14 chapters)
1
Part 1: Design Patterns and Java Platform Functionalities
4
Part 2: Implementing Standard Design Patterns Using Java Programming
8
Part 3: Other Essential Patterns and Anti-Patterns

Creating objects from different families using the abstract factory pattern

This pattern introduces a factory abstraction without the requirement to define specific classes (or classes that should be instantiated). The client requests a proper factory that instantiates the object instead of attempting to create it. The abstract factory pattern was mentioned in the GoF’s book.

Motivation

Modularizing applications can become a challenge. Software designers can avoid adding code to classes to preserve encapsulation. The motivation is to separate the factory logic from the application code so that it can supply the appropriate factory to produce the required objects. An abstract factory provides a standardized way to create an instance of the desired factory and deliver that instance to the client for use. The client uses the resulting factory to instantiate the object. Abstract factory provides an interface for creating both factories and objects without specifying their...