Question

java Timer倒数计时器（急）

求一个用Timer写的倒数计时器，不要用线程休眠来实现的！要实现的就是倒数5秒，5，4，3，2，1，0当0的时候就停止计时。求JAVA 代码。好的加分

Answer 1

哎这个太简单了。。。
Timer t = new Timer();
int s = 5;

TimerTask tt = new TimerTask()
{
public void run()
{
if(s >0)
s--;
}
};

t.scheduleAtFixedRate(tt,0,1000);

Answer 2

用那么复杂吗？

二行代码行搞定了

楼主知道不知道，，sleep方法，，，
程序暂停用的，

public class Demo_01 {
static int i = 1 ;
public static void main(String[] args) throws Exception {
while(true){
Thread.sleep(1000);
System.out.println(5-i);
i++;
if(i==5)System.out.println("你去死吧");
if(i==5)break;
}
}
}

Answer 3

import java.util.*;
class MyTimer extends TimerTask
{
private Timer timer;
private int time;
MyTimer()
{

}
MyTimer(Timer timer,int time)
{
this.time=time;
this.timer=timer;
}
public void run()
{
System.out.println(this.time);
this.time--;
if(this.time<0)
{
this.timer.cancel();
}

}
}
public class eee{
public static void main(String args[])
{
Timer t = new Timer();
int s=5;
MyTimer mt=new MyTimer(t,s);
t.scheduleAtFixedRate(mt,0,1000);
}
}

Answer 4

给个参考
public class time {
private boolean onetime = true;

public static void main(String[] args) {
time t = new time();
}

time() {
new ChangeLabel("00:5").start();
}

class ChangeLabel extends Thread // ?s•b??’ö
{

private int minitues;

private String Sminitues;

private int sound;

private String Ssound;

private String LabelTime;

public ChangeLabel(String time) {
// TODO Auto-generated constructor stub
onetime = false;
this.minitues = Integer.parseInt(time.substring(0, time
.indexOf(':')));

this.sound = Integer
.parseInt(time.substring(time.indexOf(':') + 1));
}

private long time1;

private long time2;

public void run() {
time1 = System.currentTimeMillis();
while (true) {
time2 = System.currentTimeMillis();
while (!(minitues == 0 & sound == 0) && time2 >= time1 + 1000) {
time1 = time2;
if (sound == 0) {
sound = 59;
minitues--;
} else {
sound--;
}
}
if (minitues == 0 && sound == 0) {
onetime = true;
System.out.println("ok");
break;
}
}
}
}
}