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

Summary

In this chapter, we learned about the importance of the runtime environment and the dynamic nature of program execution. Behavioral design patterns can improve a program’s interaction with the internal parts of the Java platform. The JIT compiler can handle dynamic bytecode translation at runtime better, or a garbage collector can perform more efficient memory reclamation.

Most of these design patterns comply with SOLID principles – only the visitor pattern has left some room for thought. However, recently added improvements to the Java platform can help overcome this. Whether sealed classes, switch statements, pattern-matching enhancements, or records, the platform provides a solid foundation for strengthening the program’s immutability and code stability and simplifying the use of design patterns. Some of them may come out of the box, such as a factory method and switch-case statement enhancements.

In this chapter, we learned how to solve challenges...