A Timer in Java

Java.util.Timer function
1) can arrange self-anything of the program of the class, each anything service is a thread
2) Create a timer instance
3) Add plan anything service for timer instance, plan anything service is an interface
4) use Cancel () to clear all scheduled anything on the timer object

1. Timer timer = new timer ();

Timer.schedule (New TimerTask () {run () ...},0,3000)//Every 3s

The focus of scheduleatfixedrate should be fixedrate, that is, according to the frequency you set to execute, this is said strictly according to the preset frequency to execute. For example, every 1 milliseconds, but the execution time is more than 1 milliseconds, what to do. This is the solution to this kind of problem.

A Timer in Java