public class demo11 {
    public static void main(String[] args) {
        String start = "2020-08-08";
        String end = "2021-09-08";
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
        Date dStart = null;
        Date dEnd = null;
        try {
            dStart = sdf.parse(start);
            dEnd = sdf.parse(end);
        } catch (ParseException e) {
            e.printStackTrace();
        }
        List<Date> dateList = findDates(dStart, dEnd);
        for (Date date : dateList) {
            System.out.println(sdf.format(date));
        }
    }
    //JAVA获取某段时间内的所有日期
    public static List<Date> findDates(Date dStart, Date dEnd) {
        Calendar cStart = Calendar.getInstance();
        cStart.setTime(dStart);
        List dateList = new ArrayList();
        //别忘了,把起始日期加上
        dateList.add(dStart);
        // 此日期是否在指定日期之后
        while (dEnd.after(cStart.getTime())) {
            // 根据日历的规则,为给定的日历字段添加或减去指定的时间量
            cStart.add(Calendar.DAY_OF_MONTH, 1);
            dateList.add(cStart.getTime());
        }
        return dateList;
    }
}