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bach - Java Shell Builder

This repository shows how you can use JShell to build your (modular) projects using JShell code snippets or even plain Java syntax. Every platform that sports a jshell executable is able to compile and run your build script out-of-the-box. This includes local consoles in interactive and batch modes, CI environments and IDEs. Use the debug features of your IDE to deep-dive into the details how bach works internally.

See https://github.com/sormuras/bach for details.

Note: you should first work through the exercises and comments of the originating session-1-jigsaw-intro session.

Learn to use it

The following guide helps you how to convert/port files like compile.sh or run.sh into jshell scripts (.jsh) or even into 100% Java classes (.java) that can be executed from within your IDE of choice.

Example I

Based on: "Session 1 - Example 1 - Greetings"

The first example provided an almost 1:1 port of compile.sh located in directory session-1-jigsaw-intro/01_Greetings. Again, read and understand the source and comments provided there first. These explanations are not repeated here to keep the focus on bach.

Start from console with:

  • jshell build-session-1-jigsaw-intro-01_Greetings.jsh

Example II

Based on: "Session 1 - Example 3 - Multi Module Compilation"

The second example show-cases the two worlds work together well: write your build script in a 100% Java class. Use any class provided by the JDK and mount Bach.java as a classpath dependency. Run and debug the build like usual in your IDE.

See session-1-jigsaw-intro/Build_Session_1_JigsawIntro_03_MultiModuleCompilation.java for an example.

Start from IDE:

  • Execute class Build_Session_1_JigsawIntro_03_MultiModuleCompilation from the default package. You only need to add the directories bach and session-1-jigsaw-intro as source folders and make sure the IDE uses this repository as the working directory. In IDEA you could use $MODULE_DIR$/session-3-jshell/bach-building-with-jshell.

Start from console with:

  • jshell build-session-1-jigsaw-intro-03_MultiModuleCompilation.jsh