2008-11-24 突然驚覺

java.text.SimpleDateFormat format = new java.text.SimpleDateFormat("yyyyMMdd HH:mm");
//DateMaker.getTime(yyyyMMddHHmm);
int year = Integer.parseInt(DateMaker.getTime("yyyy"));
int month = Integer.parseInt(DateMaker.getTime("MM"))-1;
int day = Integer.parseInt(DateMaker.getTime("dd"));
int h = Integer.parseInt(DateMaker.getTime("HH"));
int m = Integer.parseInt(DateMaker.getTime("mm"));
Calendar dateEarliest = new GregorianCalendar(year, month, day, h, m);
dateEarliest.add(Calendar.HOUR, 24);//增加24小時
dateEarliest.roll(Calendar.HOUR, 24);//只改變hour欄位，其他欄位都不動
String dateToday = format.format(dateEarliest.getTime());
System.out.println(dateToday);