pf4j/demo_gradle/plugins/plugin1/build.gradle

jar {
    baseName = 'WelcomePlugin'
    version = '0.1.0'
    manifest {
        attributes 'Plugin-Class': 'org.pf4j.demo.welcome.WelcomePlugin',
            'Plugin-Id': 'WelcomePlugin',
            'Plugin-Version': '1.0.0',
            'Plugin-Provider': 'Decebal Suiu'
    }
}

task plugin(type: Jar) {
    baseName = 'WelcomePlugin'
    version = '0.1.0'
    into('classes') {
        with jar
    }
    into('lib') {
        from configurations.compile
    }
    extension('zip')
}
assemble.dependsOn plugin

dependencies {
    compileOnly project(':api')
    // compileOnly important!!! We do not want to put the api into the zip file since the main program has it already!
    compile('org.pf4j:pf4j:1.4.0-SNAPSHOT') {
        exclude group: "org.slf4j"
    }
    compile 'org.apache.commons:commons-lang3:3.5'
    testCompile group: 'junit', name: 'junit', version: '4.+'
}