task run(type: JavaExec) {
                classpath = sourceSets.main.runtimeClasspath
                classpath extraClasspath
                mainClass = "driver.Driver"
            }

            task runWithJavaExec {
                dependsOn sourceSets.main.runtimeClasspath
                doLast {
                    project.javaexec {
                        if (run.executable) {

            apply plugin: "java"

            task runWithTask(type: JavaExec) {
                classpath = files(jar)
                args "hello", "world"
            }

            task runWithJavaExec {
                dependsOn jar
                def cp = files(jar)
                doLast {
                    project.javaexec {
                        classpath = cp
                        args "hello", "world"