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

Dealing with instance stages by using the pipeline pattern

The pipeline pattern can make a significant contribution to improving the organization of multiple downstream operations.

Motivation

This pattern improves data processing in a series of stages by providing an initial input and passing the processed output along for use in subsequent stages. The processing elements are arranged in a continuous pipeline so that the output of one is the input of another, similar to how a physical pipe works. A pipeline pattern can provide some kind of buffering between successive members, represented by object instances. The information that flows through these pipes is often a stream of records.

Finding it in the JDK

The most obvious example of the use of the pipeline pattern is the Stream interface and its implementations. The interface is part of the Stream API and is shipped together with the java.base module and the java.util.stream package.

Sample code

Let’s imagine...