Java timer timed daily 0 o'clock in the morning task

import java.util.TimerTask;   /* *  * * * * * *  @author admin_hzw  *  * */public  class  Task extends TimerTask {      publicvoid  run () {          System. out. println (" I have a little donkey! " " );       }  

import Java.util.Calendar;  Import Java.util.Date;    Import Java.util.Timer; /** * Task Management * @author ADMIN_HZW **/   Public classTimermanager {/** * @param args*/       Public Static voidMain (string[] args) {NewTimermanager (); }        //time interval (one day)    Private StaticFinalLongPeriod_day = -* -* -* +;  PublicTimermanager () {Calendar Calendar=calendar.getinstance (); Calendar.Set(Calendar.hour_of_day,1);//1 o'clock in the morningCalendar.Set(Calendar.minute,0); Calendar.Set(Calendar.second,0); Date Date=calendar.gettime ();//time of the first execution of a scheduled task//if the time to perform the first scheduled task is less than the current time//At this point, the time for the first scheduled task is added to the day so that the task executes at the next point in time.  If one day is not added, the task executes immediately.         if(Date.before (NewDate ())) {Date= This. Addday (Date,1); } Timer Timer=NewTimer (); Task Task=NewTask (); //schedules the specified task to begin repeating fixed deferred execution at a specified time. Timer.schedule (Task,date,period_day); }      //increase or decrease the number of days     PublicDate Addday (date date,intnum) {Calendar Startdt=calendar.getinstance ();          Startdt.settime (date);          Startdt.add (Calendar.day_of_month, num); returnStartdt.gettime (); }    }  

Java timer timed daily 0 o'clock in the morning task