java.util.concurrent.ExecutorService的问题！

Question

ExecutorService executorService=Executors.newCachedThreadPool();
//10个FutureTask
List<FutureTask> futureTasks=new ArrayList<>();
for (int i=0; i<10; i++) {
futureTasks.add(new FutureTask<>(new Callable<String>() {//FutrueTask的构造参数是一个Callable接口或runnable接口
@Override
public String call() throws Exception {
Thread.currentThread();
Thread.sleep(1000);
return Thread.currentThread().getName();//这里是异步操作
}
}));
}
for (FutureTask futureTask : futureTasks) {
executorService.execute(futureTask);
}

Answer 1

for (FutureTask futureTask : futureTasks) {
    executorService.execute(futureTask);
}