ScheduleExecutorService定时任务的使用答:ScheduleExecutorService有3个方法执行定时任务:schedule(runnable, delay, unit)scheduleAtFixedRate(runnable, initialDelay, period, unit);scheduleWithFixedDelay(runnable, initialDelay, delay, unit);其中schedule(runnable, delay, unit)是指单次延时任务; scheduleAtFixedRate 和 scheduleWithFixedDelay 都...