一个定时器Timer类

package cn.edu.henu.test.timer;import java.util.Timer;import java.util.TimerTask;public class TimerTest {public static void main(String[] args) {Timer timer = new Timer();MyTask task = new MyTask();timer.schedule(task, 0, 5000);System.out.println("----------------------------------");try {Thread.sleep(2000);task.setVar(19999);} catch (InterruptedException e) {// TODO Auto-generated catch blocke.printStackTrace();}}}class MyTask extends TimerTask {private int var = 0;@Overridepublic void run() {System.out.println("开始执行！" + var);}public void setVar(int i) {this.var = i;}}