Java 计算两个日期之间相差的月数

/** * 计算两个日期之间相差的月数 * @param date1 * @param date2 * @return */ private int getMonths(Date date1, Date date2){ int iMonth = 0; int flag = 0; try{ Calendar objCalendarDate1 = Calendar.getInstance(); objCalendarDate1.setTime(date1); Calendar objCalendarDate2 = Calendar.getInstance(); objCalendarDate2.setTime(date2); if (objCalendarDate2.equals(objCalendarDate1)) return 0; if (objCalendarDate1.after(objCalendarDate2)){ Calendar temp = objCalendarDate1; objCalendarDate1 = objCalendarDate2; objCalendarDate2 = temp; } if (objCalendarDate2.get(Calendar.DAY_OF_MONTH) < objCalendarDate1.get(Calendar.DAY_OF_MONTH)) flag = 1; if (objCalendarDate2.get(Calendar.YEAR) > objCalendarDate1.get(Calendar.YEAR)) iMonth = ((objCalendarDate2.get(Calendar.YEAR) - objCalendarDate1.get(Calendar.YEAR)) * 12 + objCalendarDate2.get(Calendar.MONTH) - flag) - objCalendarDate1.get(Calendar.MONTH); else iMonth = objCalendarDate2.get(Calendar.MONTH) - objCalendarDate1.get(Calendar.MONTH) - flag; } catch (Exception e){ e.printStackTrace(); } return iMonth; }