public class DateUtil {    public static int getDay(Date date) {        Calendar calendar = Calendar.getInstance();        calendar.setTime(date);        return calendar.get(Calendar.DATE);    }    public static int getMonth(Date date) {        Calendar calendar = Calendar.getInstance();        calendar.setTime(date);        return calendar.get(Calendar.MONTH) + 1;    }    public static int getYear(Date date) {        Calendar calendar = Calendar.getInstance();        calendar.setTime(date);        return calendar.get(Calendar.YEAR);    }    public static int getDaysOfMonth(int year, int month) {        Calendar calendar = Calendar.getInstance();        calendar.set(year, month - 1, 1);        return calendar.getActualMaximum(Calendar.DAY_OF_MONTH);    }    public static int calDiffMonth(String startDate,String endDate){        int result=0;        try {            SimpleDateFormat sfd=new SimpleDateFormat("yyyy-MM-dd");            Date start = sfd.parse(startDate);            Date end = sfd.parse(endDate);            int startYear=getYear(start);            int startMonth=getMonth(start);            int startDay=getDay(start);            int endYear=getYear(end);            int endMonth=getMonth(end);            int endDay=getDay(end);            if (startDay>endDay){ //1月17  大于 2月28                if (endDay==getDaysOfMonth(getYear(new Date()),2)){   //也满足一月                    result=(endYear-startYear)*12+endMonth-startMonth;                }else{                    result=(endYear-startYear)*12+endMonth-startMonth-1;                }            }else{                result=(endYear-startYear)*12+endMonth-startMonth;            }        } catch (ParseException e) {            e.printStackTrace();        }        return result;    }    //测试正确    public static void main(String[] args) {        int i = calDiffMonth("2017-06-30", "2018-07-01");        System.out.println(i);    }}