Publishing a JAR

The merged jar is included in a Gradle SoftwareComponent that you can publish using your plugin of choice.

Integrating publishing with common publishing plugins is very simple, but direct access to the generated jar file is also available if a custom publishing solution is needed.

maven-publish

https://docs.gradle.org/current/userguide/publishing_maven.html

KotlinGroovy

afterEvaluate {
  publishing {
    publications {
      create<MavenPublication>("maven") {
        from(components["java"])
      }
    }
  }
}

afterEvaluate {
  publishing {
    publications {
      maven(MavenPublication) {
        from(components.java)
      }
    }
  }
}

com.vanniktech.maven.publish

https://github.com/vanniktech/gradle-maven-publish-plugin

No configuration needed! Works right out of the box.

Custom Publishing

If you have your own custom publishing step, you can reference the generated jar file as a property like so:

KotlinGroovy

abstract class MyCustomPublishTask {
  @get:InputFile
  abstract val inputJar: RegularFileProperty

  // ...
}

tasks.named<MyCustomPublishTask>("publish") {
  inputJar.set(tasks.named<PackageJarTask>("packageJar").flatMap { it.outputJar })
}

abstract class MyCustomPublishTask {
  @InputFile
  abstract RegularFileProperty inputJar;

  // ...
}

tasks.named("publish", MyCustomPublishTask).configureEach {
  inputJar.set(tasks.named("packageJar", PackageJarTask).flatMap { it.outputJar })
}