public class CountDownDemo {
public static void main(String[] args) {
while( true ){
try {
Thread.sleep(1000);
DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
Date myDate = dateFormat.parse("2016-4-22 12:00:00");
long targetTimeMillis = myDate.getTime();
long currentTimeMillis = System.currentTimeMillis();
long gapSecondTime = (targetTimeMillis - currentTimeMillis)/1000;
int d = (int) gapSecondTime/(24*60*60); // 换算成小时数
int h = (int)(gapSecondTime/(60*60)%24); //换算成分钟数，以24小时切分，多出的部分就是要显示的分钟数
int m = (int)(gapSecondTime/(60)%60);//换算成分钟
int s = (int)(gapSecondTime%60);//本身gapSecondTime就是秒数，mod 60 获得的就是剩余描述
System.out.println("剩余时间："+d+"天"+h+"小时"+m+"分钟"+s+"秒");
} catch (InterruptedException e) {
e.printStackTrace();
} catch (ParseException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
}
