DateFormat df = DateFormat.getDateTimeInstance();//得到日期时间
  DateFormat dftom = DateFormat.getDateInstance(); //得到日期
  
  Date dateToday   = new Date(System.currentTimeMillis());//当前时间(毫秒)
  Date dateTomorrow= new Date(dateToday.getTime()+24*60*60*1000); 
  SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss");

  String strStarttime = dftom.format(dateTomorrow)+" 01:00:00";
  System.out.println("tomorrow is " + strStarttime);
  System.out.println("Today is    " + df.format(dateToday));
  System.out.println("dateTomorrow is " + dateTomorrow.getTime());
  System.out.println("dateToday is    " + dateToday.getTime());
  long jiange=0;
  try {
   jiange = formatter.parse(strStarttime).getTime()-dateToday.getTime();
  } catch (ParseException e) {
   
   e.printStackTrace();
  }
  System.out.println(jiange);
  System.out.println("one day:"+(dateTomorrow.getTime()-dateToday.getTime()));