isBetween方法呼叫isBetweenL方法，中間處理了一下時長

isBetweenL方法，主要任務是構造開始時間的字串和結束時間的字串，接著使用date類例項的compareTo方法與當前時間做比較，完成功能

0為當天0點。24為明天0點。

private boolean isBetween(int startHour, int endHour) {
        boolean result = false;
        int length;

        if (startHour > endHour) {
            length = 24 - (startHour -endHour );
        }else {
            length = endHour - startHour;
        }
        System.out.println("length : "+length);
        try {
            result = isBetweenL(startHour, length);//呼叫時長的方法
        } catch (ParseException e) {
            e.printStackTrace();
        }
        return result;
    }

    private boolean isBetweenL(int startHour, int timeLong) throws ParseException {
        if (startHour<0){
            return false;
        }
        if (timeLong<1){
            return false;
        }
        String startTime;
        String endTime;

        Calendar calendar = Calendar.getInstance();

        DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd");
        Date date = new Date();
        String today = dateFormat.format(date);

        if (startHour < 0) {//開始時間小於零設定為0
            startHour = 0;
        }
        timeLong = timeLong % 24;//時長超過24小時取餘
        int end = (startHour + timeLong) % 24;//結束時間,超過24時取餘

        startTime = today + " " + buildHour(startHour) + ":00:00";
        if (startHour < end) {//在同一天
            endTime = today + " " + buildHour(end) + ":00:00";
        } else {//不在同一天
            calendar.add(Calendar.HOUR_OF_DAY, timeLong);
            String nextDay = dateFormat.format(calendar.getTime());
            endTime = nextDay + " " + buildHour(end) + ":00:00";
        }

        DateFormat dateF = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");

        System.out.println("isBetween: start " + startTime + "  " + dateF.parse(startTime));
        System.out.println("isBetween: end " + endTime + "  " + dateF.parse(endTime));
        System.out.println("isBetween: date " + date);
        System.out.println("isBetween: start - cur " + dateF.parse(startTime).compareTo(date));
        System.out.println("isBetween: cur - end " + date.compareTo(dateF.parse(endTime)));
        return dateF.parse(startTime).compareTo(date) == date.compareTo(dateF.parse(endTime));
    }

    private String buildHour(int hour) {
        String temp;
        if (hour > 9) {
            temp = String.valueOf(hour);
        } else {
            temp = "0" + hour;
        }
        return temp;
    }