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Modular Programming in Java 9

更新時間：2021-07-02 18:38:52

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ThisbookiswrittenforJavadeveloperswhoareinterestedinlearningandunderstandingthetechniquesandbestpracticestobuildmodularapplicationsinJava.ThebookassumessomepreviousprogrammingexperienceinJava8orearlier,familiaritywiththebasicJavatypessuchasclassesandinterfaces,aswellasexperienceincompilingandexecutingJavaprograms.

目錄(200章)

倒序

cover
Title Page
Copyright
Modular Programming in Java 9
Credits
About the Author
About the Reviewers
www.PacktPub.com
Why subscribe?
Customer Feedback
Preface
What this book covers
What you need for this book
Who this book is for
Conventions
Reader feedback
Customer support
Downloading the example code
Errata
Piracy
Questions
Introducing Java 9 Modularity
Modularity in Java
Rethinking Java development with packages
The unfortunate tale of a library developer
The impossible task of a deployment engineer
The classpath problem
Java - the 20-year-old code base
Legacy classes
Internal APIs
Java Platform Module System
Project Jigsaw
Summary
Creating Your First Java Module
Setting up the JDK
Switching between JDKs
Setting up the NetBeans IDE
Java 9 modules
Traditional Java code structure
What is a module?
Creating a module
Creating your first Java module
Compiling your module
Executing your module
Creating a module using NetBeans
The address book viewer application
Handling possible errors
Summary
Handling Inter-Module Dependencies
Creating the second module
Compiling two modules
Configuring module dependency
Module versioning
Rethinking package structure
Understanding module path arguments
Revisiting classpath
Revisiting the classpath problems
Summary
Introducing the Modular JDK
Examining the legacy JDK
The JRE structure
Understanding rt.jar
The problem with this model
The attempted solution - Compact profiles
The state of API encapsulation
Understanding internal APIs
The problem with this model
The attempted solution - Deprecation warnings and documentation
Enter Project Jigsaw
Platform modularity
The impact of platform modularity
Module graph
The java.base module
Browsing modules
Module types
Examining platform file structure
Observable modules
Revisiting the two problems
Solving the monolithic runtime
Solving the API encapsulation problem
Summary
Using Platform APIs
Adding logging ability
Using an alternative compiler command
Reading contacts from an XML file
Removing the hard-coded contact list
Creating the module
Coding the XmlUtil class
Coding the ContactLoader class
Shared classes
Dependency leakage
Consuming the new module
Adding UI with Java FX
Creating the module
Summary
Module Resolution Readability and Accessibility
Readability
Accessibility
Interface and implementation accessibility
Split packages
Tweaking modularity
Implied readability
Aggregator modules
Java platform aggregator modules
Qualified exports
Applying the concepts to address book viewer
Creating a custom aggregator module
Optimizing module imports
Optimizing module exports
Summary
Introducing Services
The problem of coupling
Understanding services
The service registry
Creating and using services
Implementing sorting services
Drawing the module graph
Advanced services
Supporting singleton and factory providers
Implementing service priorities
Service interface provider lookup
Selective service instantiation
Services and the module system goals
Summary
Understanding Linking and Using jlink
Module resolution process
Module resolution steps
Examining module resolution in action
Revisiting the state of the JDK
Linking using jlink
The jlink command
Link phase optimizations and jlink plugins
Building a modular JAR file
Summary
Module Design Patterns and Strategies
Designing modules
Scoping
Team structure
Reusability
Modularizing by concerns
Modularizing by layers
Modularizing by change patterns
Designing API
Java modules coding patterns and strategies
Pattern 1 - Public interface private implementation and factory class
Example
Pattern 2 - Services for multiple dynamic implementations
Example
Pattern 3 - Optional dependencies
Example
Pattern 4 - Optional dependencies using services
Example
Pattern 6 - Bundle model classes as separate sharable modules
Pattern 7 - Open modules for reflection
Example
Pattern 8 - Use tooling for version control
Pattern 9 - Design for changes
Pattern 10 - Protect against dependency leakage
Pattern 11 - Aggregator and facade modules
Example
Summary
Preparing Your Code for Java 9
Beginning Java 9 migration
Introducing the sample Java 8 application
Using the Java 9 compiler and runtime
The unnamed module
Handling non-standard access
The jdeps tool
Overriding module behavior
Understanding the impact
Recommended strategy
Summary
Migrating Your Code to Java 9
Understanding the migration goal
Beginning the migration
Automatic modules
Automatic module naming
Automatic module definition
Migrating with automatic modules
Using jdeps to outline module relationships
Refactoring into smaller modules
Handling larger codebases
Migrating libraries
Reserving library names
Using jdeps to create module descriptors
Building libraries for multiple Java versions
Summary
Using Build Tools and Testing Java Modules
Integrating with Apache Maven
A Maven refresher
Using Maven with Java 9 modules
Working on a multi-module Java 9 Maven project
Building the multi-module project
Executing the multi-module project
Understanding the exec plugin's module path
Unit testing modules with Java 9
Testing a Java 9 module
Integrating with JUnit
Wrapping up
Summary 更新時間：2021-07-02 18:38:52

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Modular Programming in Java 9