<dependency>
            <groupId>co.paralleluniverse</groupId>
            <artifactId>quasar-core</artifactId>
            <version>0.7.10</version>
</dependency>

-javaagent:D:\.m2\repository\co\paralleluniverse\quasar-core\0.7.10\quasar-core-0.7.10.jar

public static void main(String[] args) throws Exception{
        CountDownLatch count  = new CountDownLatch(10000);
        StopWatch stopWatch = new StopWatch();stopWatch.start();
        IntStream.range(0,10000).forEach(i-> new Fiber() {
            @Override
            protected String run() throws SuspendExecution, InterruptedException {
                Strand.sleep(1000 );
                count.countDown();
                return  "aa";
            }
        }.start());
        count.await();stopWatch.stop();
        System.out.println("結(jié)束了: " + stopWatch.prettyPrint());
    }

public static void main(String[] args) throws Exception{
        CountDownLatch count  = new CountDownLatch(10000);
        StopWatch stopWatch = new StopWatch();stopWatch.start();
        ExecutorService executorService = Executors.newCachedThreadPool();
        IntStream.range(0,10000).forEach(i-> executorService.submit(() -> {
            try {
                TimeUnit.SECONDS.sleep(1);
            } catch (InterruptedException ex) { }
            count.countDown();
        }));
        count.await();stopWatch.stop();
        System.out.println("結(jié)束了: " + stopWatch.prettyPrint());
    }

fun main() {
    val count = CountDownLatch(10000)
    val stopWatch = StopWatch()
    stopWatch.start()
    IntStream.range(0,10000).forEach {
        GlobalScope.launch {
            delay(1000L)
            println(Thread.currentThread().name + "->"+ it)
            count.countDown()
        }
    }
    count.await()
    stopWatch.stop()
    println("結(jié)束了: " + stopWatch.prettyPrint())
}

@Service
class KotlinAsyncService(private val weatherService: GetWeatherService,private val demoApplication: DemoApplication){
    val weatherUrl = "http://localhost:8080/demo/mockWeatherApi?city="
    fun getHuNanWeather(): JSONObject{
        val result = JSONObject()
        val count = CountDownLatch(demoApplication.weatherContext.size)
        for (city in demoApplication.weatherContext){
            val url = weatherUrl + city.key
            GlobalScope.launch {
                result[city.key.toString()] = weatherService.get(url)
                count.countDown()
            }
        }
        count.await()
        return result
    }
}