Java timer problem example analysis

Timer problem

Timer is a basic component. Whether it is user space program development or kernel space program development, it often needs the support of timer as a basic component. The implementation of a timer needs to have the following four basic behaviors: add timer, cancel timer, timer check and expiration execution.

Please design a timer and realize the following three basic behaviors. The function prototype has been given. You can use any programming language to design the data structure and implementation, and support a large number of timers as efficiently as possible:

//Add timer: execute the target operation after a specific time interval

/ / enter 1: interval timer time, in MS

/ / enter 2: expiryaction target action

/ / return: timer ID

　　StartTimer(Interval,ExpiryAction) -> TimerId

/ / cancel timer

/ / enter: timer ID

　　StopTimer(TimerId)

/ / timer check

/ / the system will call this function every 10ms

　　PerTickBookkeeping()

Don't say much, just go to the code:

　　1)Timer.java:

　　2)DoTimer.java：

I hope this article can help you