java - Timer vs. ScheduledExecutorService 调度

Question

ScheduledExecutorService 的推荐用途之一是作为 Timer 的直接替代品类，正如已经在许多 StackOverflow 主题中讨论的那样:

• Java Timer vs ExecutorService?
• Difference between TimerTask and Executors.newScheduledThreadPool(1)
• What is the difference between schedule and scheduleAtFixedRate?
• Android Timer schedule vs scheduleAtFixedRate

但是，ScheduledExecutorService 和 Timer 支持的方法的命名约定并不相同。例如，尽管它们都有一个 scheduleAtFixedRate() 方法，但 Timer 方法

• schedule (TimerTask任务，长延迟，长周期)

没有同名对应物。

是ScheduledExecutorService方法

• scheduleWithFixedDelay (可运行命令，long initialDelay，long delay，TimeUnit 单位)

用哪个代替？

Answer 1

https://docs.oracle.com/javase/7/docs/api/java/util/concurrent/ScheduledExecutorService.html#scheduleAtFixedRate(java.lang.Runnable,%20long,%20long,%20java.util.concurrent.TimeUnit)

Creates and executes a periodic action that becomes enabled first after the given initial delay, and subsequently with the given delay between the termination of one execution and the commencement of the next.

https://docs.oracle.com/javase/7/docs/api/java/util/Timer.html#schedule(java.util.TimerTask,%20long,%20long)

Schedules the specified task for repeated fixed-delay execution, beginning after the specified delay. Subsequent executions take place at approximately regular intervals separated by the specified period.

我会说 - 是的 ;-)