Simple configuration of Javadoc coverage doclet for Gradle

build.gradle

configurations {
    // Other configuration lines might be in here
    javadocCoverage
}

dependencies {
    // Your application's other dependencies go here.
    javadocCoverage "com.manoelcampos:javadoc-coverage:1.1.0"
}

// This generates the Javadoc coverage report into build/reports/javadoc/javadoc-coverage.html
task javadocCoverageReport(type: Javadoc, dependsOn: javadoc) {
    source = sourceSets.main.allJava
    destinationDir = reporting.file("javadoc")
    options.docletpath = configurations.javadocCoverage.files.asType(List)
    options.doclet = "com.manoelcampos.javadoc.coverage.CoverageDoclet"
}

// Optionally you can add the dependsOn here so that when you generate the javadoc
// jar, e.g. if you include the javadocJar in a publishing configuration, the javadoc
// coverage report will be generated automatically.
task javadocJar(type: Jar, dependsOn: javadocCoverageReport) {
    classifier "javadoc"
    from javadoc.destinationDir
}