public void init(){
  int OneDayMinutes=24 * 60;
  _scheduler.scheduleAtFixedRate(new PasswordExpireMailNotifier(),getFirstDelayInMin(),OneDayMinutes,TimeUnit.MINUTES);
}

public void init ( ) { int OneDayMinutes = 24 * 60 ; _scheduler . scheduleAtFixedRate ( new PasswordExpireMailNotifier ( ) , getFirstDelayInMin ( ) , OneDayMinutes , TimeUnit . MINUTES ) ; }
initialize a scheduler to run notification thread once per day at 3 : 00 am .
