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README.adoc

java9-module-refactoring

Slides and Abstract on my website: http://rgra.github.io

Goal: Create two modular applications, one for a Vet and one for a Car Repair Shop.

Use the provided scripts to compile and run the applications. Java 9 needs to be installed and the JAVA9 environment variable must point to the Java 9 /bin directory.

de.rgra.vet_01

Initial code example with a simple JavaFX Application for a Vet.

It uses the commons.lang Jar for toString operations in Customer.

de.rgra.vet_02

Refactoring Step 1: Add Sub-Packages for technical layers

de.rgra.vet_03

Refactoring Step 2: Creating Modules by splitting up the existing code

  • model

  • ui

  • pet

  • app

Uses a modified commons-lang-2.6.jar with Automatic-Module-Name in MANIFEST.MF.

de.rgra.vet_04

Refactoring Step 3: Resolving TODO in CustomerView with ServiceLoader

de.rgra.vet_05

Refactoring Step 4:

  • Creating a general App Module

  • Creating a new Car Module, similar to the Pet Module

  • Resolving TODO in VisitDao

  • Refactoring vet.app to use the general app

  • Creating car.app which references on the Car Module instead of the Pet module

This also adds a script for using the jlink to create platform specific standalone versions of the two applications.

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Code for Talk: Refactoring your code to Java 9 modules

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