新手求教，JAVA怎么计算出两个日期之间相差多少个月？？在线等。。。

Question

就比如：2017-04-21 和 2018-04-21 我要的结果是 12

Answer 1

If you can't use JodaTime, you can do the following:

    public int getMonths(Date startDate, Date endDate) {
        Calendar startCalendar = new GregorianCalendar();
        startCalendar.setTime(startDate);
        Calendar endCalendar = new GregorianCalendar();
        endCalendar.setTime(endDate);

        int diffYear = endCalendar.get(Calendar.YEAR) - startCalendar.get(Calendar.YEAR);
        int diffMonth = diffYear * 12 + endCalendar.get(Calendar.MONTH) - startCalendar.get(Calendar.MONTH);
        return diffMonth;
    }