import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
public class time {
public static void main(String[] args) {
Date date=new Date(System.currentTimeMillis());
SimpleDateFormat df=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
while(true){
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
String time=df.format(date);
System.out.println(time);
}
}
}
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
public class time {
public static void main(String[] args) {
Date date=new Date(System.currentTimeMillis());
SimpleDateFormat df=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
while(true){
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
String time=df.format(date);
System.out.println(time);
}
}
}
把这一行放到你的while循环内部就可以了。
Date date = new Date();然后再while里面给date赋值,
date = new Date(System.currentTimeMillis());这样就ok了。
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.Timer;
import java.util.TimerTask;
/**
* 测试.
*
* @author Ruidong_pu
* @version 2013.3.8
*/
public class TestTop {
public TestTop(){
showTime();//从构造函数调用.
}
public static void showTime(){
new Timer().schedule(new TimerTask() {//匿名定时器对象.
@Override
public void run() {
// TODO Auto-generated method stub
Calendar ca = Calendar.getInstance();
System.out.println(ca.get(Calendar.YEAR)+"年"+(ca.get(Calendar.MONTH)+1)+"月"+ca.get(Calendar.DAY_OF_MONTH)+"日"+ca.get(Calendar.HOUR_OF_DAY)+"时"+ca.get(Calendar.MINUTE)+"分"+ca.get(Calendar.SECOND)+"秒");
}
},1000,1000);
}
public static void main(String args[]) {
// TODO Auto-generated method stu
}
}