如何从Gradle Kotlin DSL构建文件中执行JAR？

Question

如何执行Gradle Kotlin DSL构建文件中的构建JAR文件 ？也就是说，使其成为一项任务。

thufir@dur:~/NetBeansProjects/HelloKotlinWorld$ 
thufir@dur:~/NetBeansProjects/HelloKotlinWorld$ gradle clean ShadowJar;java -jar build/libs/app-9-inajar.jar 

Deprecated Gradle features were used in this build, making it incompatible with Gradle 6.0.
Use '--warning-mode all' to show the individual deprecation warnings.
See https://docs.gradle.org/5.0/userguide/command_line_interface.html#sec:command_line_warnings

BUILD SUCCESSFUL in 1s
5 actionable tasks: 5 executed
Hello world.
thufir@dur:~/NetBeansProjects/HelloKotlinWorld$ 

版本file：

import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
import com.github.jengelman.gradle.plugins.shadow.tasks.ShadowJar

plugins {
    kotlin("jvm") version "1.3.11"
    id("com.github.johnrengelman.shadow") version "2.0.4"
}

group = "xxx.yyy"
version = "1.0-SNAPSHOT"

repositories {
    mavenCentral()
}

dependencies {
    implementation(kotlin("stdlib-jdk8"))
}

tasks.withType<KotlinCompile> {
    kotlinOptions.jvmTarget = "1.8"
}

tasks.withType<ShadowJar> {

    baseName = "app"
    classifier = "inajar"
    version = "9"


    manifest.attributes.apply {
        put("Implementation-Title", "Gradle Jar File Example")
        //put("Implementation-Version" version)
        put("Main-Class", "HelloKotlinWorld.App")
    }

}

直接在构建文件中移至TestNG。