小编Mic*_*ael的帖子

在我的应用程序中,我使用ScheduledExecutorService,但只生成一个线程来处理计划任务.这是因为ScheduledExecutorService不会产生线程来处理挂起的任务吗？

这是一个代码片段,它只输出"run()1"而不是预期的"run()1",然后是"run()2"......"run()10".

public class App {

    public static void main(String[] args) {
        int N = 10;
        Runnable runner = new Runnable() {

            public void run() {
                foo();
            }
        };
        for (int i = 0; i < N; i++) {
            executor.schedule(runner, i, TimeUnit.MILLISECONDS);
        }
    }

    private static void foo() {
        System.out.println("run() " + (++n));
        synchronized (executor) {
            try {
                executor.wait();
            } catch (InterruptedException ex) {
                Logger.getLogger(App.class.getName()).log(Level.SEVERE, null, ex);
            }
        }
        System.out.println("finished()");
    }
    private static Logger logger = Logger.getLogger(App.class.getName());
    private static int …