The Java Module System
Product ID: 171273801
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Summary Java's much-awaited "Project Jigsaw" is finally here! Java 11 includes a built-in modularity framework, and The Java Module System is your guide to discovering it. In this new book, you'll learn how the module system improves reliability and maintainability, and how it can be used to reduce tight coupling of system components. Foreword by Kevlin Henney. Purchase of the print book includes a free eBook in PDF, Kindle, and ePub formats from Manning Publications. You'll find registration instructions inside the print book. About the Technology Packaging code into neat, well-defined units makes it easier to deliver safe and reliable applications. The Java Platform Module System is a language standard for creating these units. With modules, you can closely control how JARs interact and easily identify any missing dependencies at startup. This shift in design is so fundamental that starting with Java 9, all core Java APIs are distributed as modules, and libraries, frameworks, and applications will benefit from doing the same. About the Book The Java Module System is your in-depth guide to creating and using Java modules. With detailed examples and easy-to-understand diagrams, you'll learn the anatomy of a modular Java application. Along the way, you'll master best practices for designing with modules, debugging your modular app, and deploying to production. What's inside The anatomy of a modular Java app Building modules from source to JAR Migrating to modular Java Decoupling dependencies and refining APIs Handling reflection and versioning Customizing runtime images Updated for Java 11 About the Reader Perfect for developers with some Java experience. About the Author Nicolai Parlog is a developer, author, speaker, and trainer. His home is codefx.org. Table of Contents PART 1 - Hello, modules First piece of the puzzle Anatomy of a modular application Defining modules and their properties Building modules from source to JAR Running and debugging modular applications PART 2 - Adapting real-world projects Compatibility challenges when moving to Java 9 or later Recurring challenges when running on Java 9 or later Incremental modularization of existing projects Migration and modularization strategies PART 3 - Advanced module system features Using services to decouple modules Refining dependencies and APIs Reflection in a modular world Module versions: What's possible and what's not Customizing runtime images with jlink Putting the pieces together Review: Author speaking on SE Radio - FYI, the author, Nicolai Parlog, can be heard on the SE Radio podcast, episode 316. He speaks about the Java Platform Module System (JPMS), the subject of this book, among other things. Good stuff. My book arrived on time. Review: everything you could want to know about modules - Up front: I'm a bit biased here as I was the Technical Development Editor and contributed a bit to this book. However, it is an excellent book. When I started reading, I wondered how one could write a whole book about the Java Module System. Well you can. This book reminded me a little of the O'Reilly Regular Expression book. If you want to understand the topic just enough to get started, you can read just a little. If you want to understand it in depth, you can read the whole book. I really liked the examples and migration strategies in this book. I didn't know much about the module system starting out. By the time I finished the book, I knew a good amount. Then I didn't use it and forgot. This year, I took both OCP Java certification exams. As both covered modules, I used this book to study the topic. It came back right away and I am recommending chapters in this book to those studying for the certification. (Until study guides come out.) Conveniently, Manning allows buying parts of a book. If you want to learn about modules rather than just pass the cert, you should buy the whole book though! You'll learn a lot; even in the appendixes.
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| Customer Reviews | 4.3 out of 5 stars 26 Reviews |
D**P
Author speaking on SE Radio
FYI, the author, Nicolai Parlog, can be heard on the SE Radio podcast, episode 316. He speaks about the Java Platform Module System (JPMS), the subject of this book, among other things. Good stuff. My book arrived on time.
J**Y
everything you could want to know about modules
Up front: I'm a bit biased here as I was the Technical Development Editor and contributed a bit to this book. However, it is an excellent book. When I started reading, I wondered how one could write a whole book about the Java Module System. Well you can. This book reminded me a little of the O'Reilly Regular Expression book. If you want to understand the topic just enough to get started, you can read just a little. If you want to understand it in depth, you can read the whole book. I really liked the examples and migration strategies in this book. I didn't know much about the module system starting out. By the time I finished the book, I knew a good amount. Then I didn't use it and forgot. This year, I took both OCP Java certification exams. As both covered modules, I used this book to study the topic. It came back right away and I am recommending chapters in this book to those studying for the certification. (Until study guides come out.) Conveniently, Manning allows buying parts of a book. If you want to learn about modules rather than just pass the cert, you should buy the whole book though! You'll learn a lot; even in the appendixes.
B**E
Way too many pages
The author took a topic that could be explained well enough in 20 pages and in exhaustive detail in another 100 and made it over 400 pages. Too many useless words for me. In fact, I have gotten zero information from it because it is just too verbose. I do not recommend this book to anyone!
S**T
Well done
"The Java Module System" by Nicolai Parlog is very clear and easy to follow which is much needed for this introduction to this module system. The only complaint that I have is that some of the graphics are hard to read. My eyes just aren't what they used to be. Aside from that, it was well organized and formatted. It is well worth the look.
J**N
good basic guide
this is a good basic guide for this system, and makes a great way to broaden your java skills.
I**K
An opaque and overwritten discussion of the Java Module System
I purchased this book as an eBook directly from the publisher. When I purchased and read this book, I wanted a guide to the Java 9+ module feature. I wanted to know what the syntax was and how to use it. What I got in this book is a long discussion about the module systems where I head to tease out the application. I found myself skipping over some of the paragraphs to try to get the core topic of the module system syntax and application.
L**E
A bit beyond me right now
I need to learn more of the basics of Java before tackling this. It is not a book for complete beginners, but it looks very well written.
J**N
Not Enough Context
I was unimpressed with the presentation. Very dry, and not as useful as I thought it would be. I believe that a full JavaScript reference would probably better serve my needs for learning about Java Modules.
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