传统定时器技术回顾(jdk1.5以前)
public class TraditionalTimerTest {
static int count = 0;
public static void main(String[] args) { //10秒后开始执行,每隔3秒执行一次
new Timer().schedule(new TimerTask() { @Override
public void run() {
System.out.println("bombing..."); }
}, 10000,3000); /**
* 需求:2秒,4秒间隔执行定时任务
*/
class MyTimerTask extends TimerTask{
@Override
public void run() {
count = (count+1)%2;
System.out.println("bombing...");
new Timer().schedule(new MyTimerTask(), 2000 + 2000*count);
}
}
new Timer().schedule(new MyTimerTask(), 2000); while(true){
try {
System.out.println(new Date().getSeconds());
Thread.sleep(1000);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
//对于较复杂的业务,周一~周五执行任务,周六日不执行
//quartz } }
还有一种方式,定义两个定时器
public class TimerTask1 extends TimerTask{ @Override
public void run() {
System.out.println("bombing...");
new Timer().schedule(new MyTimerTask2(), );
}}
public class MyTimerTask2 extends TimerTask{ @Override
public void run() {
System.out.println("bombing...");
new Timer().schedule(new TimerTask1(), );
}}
new Timer().schedule(new TimerTask1(), ); while(true){
System.out.println(new Date().getSeconds());
try {
Thread.sleep();
} catch (InterruptedException e) {
e.printStackTrace();
}
}