可以用同一个线程一一执行多个任务而不破坏和重新创建线程吗？

Question

可以用同一个线程一一执行多个任务而不破坏和重新创建线程吗？

public class SimpleThreadPool {

    public static void main(String[] args) {

        ExecutorService executorService = Executors.newFixedThreadPool(5);

        for (int i = 0; i < 10; i++) {

            Runnable worker = new WorkerThread("" + i);

            executorService.execute(worker); // How many threads are created?

        }

        executorService.shutdown();

        while (!executorService.isTerminated()) {

        }

        System.out.println("All threads Executed");

    }

}

Answer 1

ExecutorService executorService = Executors.newFixedThreadPool(5); 这将在Executor.&nbsp; for (int i = 0; i < 10; i++) {&nbsp; &nbsp; &nbsp; &nbsp; Runnable worker = new WorkerThread("" + i);&nbsp; &nbsp; &nbsp; &nbsp; executorService.execute(worker); // How many threads are created?&nbsp; &nbsp; }这将创建 10 个提交给执行程序服务执行的任务。ExecutorService 将使用固定的 5 个线程来执行这 10 个任务。所以是的，您将有一个线程执行多项任务而无需重新创建。