Master design patterns and best practices to build truly modular applications in Java 9
Upgrade your old Java code to Java 9 with ease
Build and run a smooth functioning multi-module application.

Book Description

The Java 9 module system is an important addition to the language that affects the way we design, write, and organize code and libraries in Java. It provides a new way to achieve maintainable code by the encapsulation of Java types, as well as a way to write better libraries that have clear interfaces. Effectively using the module system requires an understanding of how modules work and what the best practices of creating modules are.

This book will give you step-by-step instructions to create new modules as well as migrate code from earlier versions of Java to the Java 9 module system. You'll be working on a fully modular sample application and add features to it as you learn about Java modules. You'll learn how to create module definitions, setup inter-module dependencies, and use the built-in modules from the modular JDK. You will also learn about module resolution and how to use jlink to generate custom runtime images.

We will end our journey by taking a look at the road ahead. You will learn some powerful best practices that will help you as you start building modular applications. You will also learn how to upgrade an existing Java 8 codebase to Java 9, handle issues with libraries, and how to test Java 9 applications.

What you will learn

Get introduced to the concept of modules and modular programming by working on a fully modular Java application
Build and configure your own Java 9 modules
Work with multiple modules and establish

About the Author

Koushik Kothagal is the founder of Java Brains, an online training website that offers courses on various enterprise Java and JavaScript technologies entirely for free. He works as a Senior Staff Engineer at Financial Engines. He has over 14 years of professional experience working on full-stack web applications and has worked extensively with technologies such as Java, Spring, Java EE, JavaScript, and Angular. He loves teaching, and when he's not coding Java and JavaScript, he's probably teaching it! He currently lives in the Bay Area.

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