Java计算两个日期相差的月数

/** * 获取两个日期相差的月数 */public static int getMonthDiff(Date d1, Date d2) {    Calendar c1 = Calendar.getInstance();    Calendar c2 = Calendar.getInstance();    c1.setTime(d1);    c2.setTime(d2);    int year1 = c1.get(Calendar.YEAR);    int year2 = c2.get(Calendar.YEAR);    int month1 = c1.get(Calendar.MONTH);    int month2 = c2.get(Calendar.MONTH);    int day1 = c1.get(Calendar.DAY_OF_MONTH);    int day2 = c2.get(Calendar.DAY_OF_MONTH);    // 获取年的差值     int yearInterval = year1 - year2;    // 如果 d1的 月-日 小于 d2的 月-日 那么 yearInterval-- 这样就得到了相差的年数    if (month1 < month2 || month1 == month2 && day1 < day2) {        yearInterval--;    }    // 获取月数差值    int monthInterval = (month1 + 12) - month2;    if (day1 < day2) {        monthInterval--;    }    monthInterval %= 12;    int monthsDiff = Math.abs(yearInterval * 12 + monthInterval);    return monthsDiff;}