Java获取当前时间季度开始和结束时间以及对应的天数,

    /**
     * 获取当前日期所在季度的开始日期和结束日期
     * 季度一年四季， 第一季度：1月-3月， 第二季度：4月-6月， 第三季度：7月-9月， 第四季度：10月-12月
     * @param isFirst  true表示查询本季度开始日期  false表示查询本季度结束日期
     * @return
     */
    public static LocalDate getStartOrEndDayOfQuarter(Boolean isFirst){
        LocalDate today=LocalDate.now();
        LocalDate resDate = LocalDate.now();
        if (today == null) {
            today = resDate;
        }
        Month month = today.getMonth();
        Month firstMonthOfQuarter = month.firstMonthOfQuarter();
        Month endMonthOfQuarter = Month.of(firstMonthOfQuarter.getValue() + 2);
        if (isFirst) {
            resDate = LocalDate.of(today.getYear(), firstMonthOfQuarter, 1);
        } else {
            resDate = LocalDate.of(today.getYear(), endMonthOfQuarter, endMonthOfQuarter.length(today.isLeapYear()));
        }
        return resDate;
    }
    //获取当前季度
    public static String getQuarterByDate(String date) throws ParseException {
        if(date == ""|| "".equals(date)){
            return "";
        }
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
        Date datePar = sdf.parse(date);
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(datePar);

        String year = String.valueOf(calendar.get(Calendar.YEAR));
        int mouth = datePar.getMonth()+1;

        if(mouth>=1 && mouth<=3){
            return year + "年第一季度";
        }else if(mouth>=4 && mouth<=6){
            return year + "年第二季度";
        }else if(mouth>=7 && mouth<=9){
            return year + "年第三季度";
        }else if(mouth>=10 && mouth<=12){
            return year + "年第四季度";
        }else{
            return "";
        }
    }

    /**
     * 获取当期季度的天数
     * @param cntDateBeg  开始时间
     * @param cntDateEnd  结束时间
     * @return
     */
    public static List<String> addDates(String cntDateBeg, String cntDateEnd) {
        List<String> list = new ArrayList<>();
        String[] dateBegs = cntDateBeg.split("-");
        String[] dateEnds = cntDateEnd.split("-");
        Calendar start = Calendar.getInstance();
        start.set(Integer.valueOf(dateBegs[0]), Integer.valueOf(dateBegs[1]) - 1, Integer.valueOf(dateBegs[2]));
        Long startTIme = start.getTimeInMillis();
        Calendar end = Calendar.getInstance();
        end.set(Integer.valueOf(dateEnds[0]), Integer.valueOf(dateEnds[1]) - 1, Integer.valueOf(dateEnds[2]));
        Long endTime = end.getTimeInMillis();
        Long oneDay = 1000 * 60 * 60 * 24l;
        Long time = startTIme;
        while (time <= endTime) {
            Date d = new Date(time);
            DateFormat df = new SimpleDateFormat("yyyy-MM-dd");
            time += oneDay;
            list.add(df.format(d));
        }
        return list;
    }