Gradle JavaExec Task Type

External

• https://docs.gradle.org/current/dsl/org.gradle.api.tasks.JavaExec.html
• https://docs.gradle.org/current/javadoc/org/gradle/api/tasks/JavaExec.html
• https://www.baeldung.com/gradle-run-java-main

Internal

• Gradle Tasks
• Java Plugin

Overview

Executes a Java application as a child process. To get details on the actual java command line, execute Gradle with -i command line option.

task someTask(type: JavaExec) {
    classpath = configurations.runtimeClasspath
    main = 'myPackage.MyMainClass'
    args 'something somethingelse'
    jvmArgs = ['-Xmx12g']
    environment "LD_LIBRARY_PATH", "/usr/local/lib"
    systemProperties [ "some.prop": "some.value", "some.other.prop": "some.other.value" ]
}

Configuration

classpath

classpath = sourceSets.main.runtimeClasspath

classpath = configurations.runtimeClasspath

main

The main class. Must be available on classpath.

main = 'playground.javaExec.Main'

args

args = 'A B C'

The string will be broken into space-separated tokens and provided as individual command line arguments.