kotlinx-coroutines-core/src/test/kotlin/examples/example-03.kt

package examples

import kotlinx.coroutines.experimental.*

fun main(args: Array<String>) = runBlocking<Unit> {
    val job = launch(CommonPool) { // create new coroutine and keep a reference to its Job
        delay(1000L)
        println("World!")
    }
    println("Hello,")
    job.join() // wait until child coroutine completes
}