ScheduledExecutorService具有可变延迟 [英] ScheduledExecutorService with variable delay

问题描述

假设我有一个任务从java.util.concurrent.BlockingQueue中拉取元素并处理它们。

Suppose I have a task that is pulling elements from a java.util.concurrent.BlockingQueue and processing them.

public void scheduleTask(int delay, TimeUnit timeUnit)
{
    scheduledExecutorService.scheduleWithFixedDelay(new Task(queue), 0, delay, timeUnit);
}

如果可以动态更改频率，如何安排/重新安排任务？

How can I schedule / reschedule the task if the frequency can be changed dynamically?

• 这个想法是采取数据更新流并将它们批量传播到GUI


• 用户应该能够更改更新的频率

推荐答案

您可以更改固定速率延迟。我认为您需要使用 schedule（）来执行一次性操作，并且在完成后再次计划一次（具有修改的超时if必需）。

I don't think you can change a fixed rate delay. I think you need to use schedule() to perform a one-shot, and schedule again once that has completed (with a modified time out if required).

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