设置每天23:59:59自动执行
Java.util.Timer.scheduleAtFixedRate(TimeTask task,Date firstTime,long period)
public static void test(){
Calebdar calendar = Calendar.getInstance();
calendar.set(Calendar.HOUR_OF_DAY,23);
calendar.set(Calendar.MINUTE,59);
calendar.set(Calendar.SECOND,59);
Date time = calendar.getTime();
Timer timer = new Timer();
timer.scheduleAtFixedRate(new TimerTask(){
public void run(){
system.out.println("-------执行的任务------");
},time,1000*60*60*24); //设置成每天固定执行
}
}