Gradle Java Plugin

External

• https://docs.gradle.org/current/userguide/java_plugin.html

Internal

• Gradle Plugins | Core Plugins
• Java Library Plugin

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Gradle Java Plugin TODELETE

Overview

The Java plugin adds Java compilation, testing and packaging capabilities to a project. It also serves as the basis for many of the other JVM language Gradle plugins.

plugins {
  id 'java'
}

However, Java Library plugin should be used by default with Java projects instead of Java plugin. Java Library plugin extends the Java plugin, so it offers all the features of the Java plugin, plus a set of additional ones:

Java Library Plugin

The Java plugin instantiates by default two source sets ("main" and "test"). Each of these source sets has an associated compile task: compileJava (which should have been called compileMainJava) for the "main" source set and compileTestJava for the "test" source set.

Concepts

Source Set

Also see:

Dependency Configurations

Configuration

Various aspects related to Java compilation are set in the "java" script block:

java {
  toolchain {
    languageVersion = JavaLanguageVersion.of(11)
  }
}

Tasks

compileJava

The "compileJava" task is backed by the JavaCompile type.

jar

Assembles the JAR file, based on the classes and resources attached to the main source set. Depends on classes. The task is backed by the Jar type. Configuration details in:

Jar Task Type

Java Plugin Predefined Task Types

JavaCompile

JavaCompile exposed as "compileJava" task

Jar

Jar exposed as "jar" task

JavaExec

JavaExec