Java获取2个日期里面的所有月份

　　public static void main(String[] args) {

        String t1="2018-08-01";
        t1 = t1.replaceAll("(\\d{4})\\-(\\d{2})\\-\\d{2}", "$1-$2-01");
        //String t2="2024-11-30";
        //String t2="2018-01-30";
        //String t2="2019-09-30";
        String t2 = "2019-09-31";
        t2 = t2.replaceAll("(\\d{4})\\-(\\d{2})\\-\\d{2}", "$1-$2-01");

        List<String> monthArea = getMonthArea(t1,t2);

        for(String t : monthArea) {
            System.out.println(t);
        }

    }
    private static List<String> getMonthArea(String t1,String t2) {

        LocalDate startDate = LocalDate.parse(t1);
        LocalDate endDate = LocalDate.parse(t2);

        List<String> monthArea = new ArrayList<>();

        if (startDate.compareTo(endDate)>0) {
            return monthArea;
        }

        int startYear = startDate.getYear();
        int startMonth = startDate.getMonthValue();

        int endYear = endDate.getYear();
        int endMonth = endDate.getMonthValue();

        if (startYear==endYear) {
            for(int i=startMonth;i<=endMonth;i++) {
                monthArea.add(startYear+"-"+getMyMonth(i));
            }
        }else {
            for(int i=startYear;i<=endYear;i++) {
                if (i == startYear ) {
                    calcStartYear(monthArea,startYear,startMonth);
                }else if (i == endYear){
                    calcEndYear(monthArea,endYear,endMonth);
                }else {
                    calcOneYear(monthArea,i);
                }
            }
        }

        return monthArea;

    }
    private static void calcStartYear(List<String> monthArea,int startYear,int startMonth) {
        for(int i=startMonth;i<=12;i++) {
            monthArea.add(startYear+"-"+getMyMonth(i));
        }
    }
    private static void calcOneYear(List<String> monthArea,int year) {
        for(int i=1;i<=12;i++) {
            monthArea.add(year+"-"+getMyMonth(i));
        }
    }
    private static void calcEndYear(List<String> monthArea,int endYear,int endMonth) {
        for(int i=1;i<=endMonth;i++) {
            monthArea.add(endYear+"-"+getMyMonth(i));
        }
    }
    private static String getMyMonth(int month){
        String result = "";
        if (month<10) {
            result = "0" + Integer.toString(month);
        }else {
            result = Integer.toString(month);
        }
        return result;
    }