博客

public static void main(String[] args) throws ParseException {
        SimpleDateFormat ft = new SimpleDateFormat ("yyyy-MM-dd hh:mm:ss");
        Date startTime = ft.parse("2021-08-05 10:00:00");
        Date endTime = ft.parse("2030-08-05 10:00:00");
        Date nowTime = new Date();
        boolean flag = isInTime(nowTime, startTime, endTime);
        if (flag) {
            System.out.println("当前时间在范围内");
        }else {
            System.out.println("当前时间在不在范围内");
        }

    }
    /**
     *
     * @param nowTime   当前时间
     * @param startTime	开始时间
     * @param endTime   结束时间
     * @return
     *  判断当前时间在时间区间内
     */
    public static boolean isInTime(Date nowTime, Date startTime, Date endTime) {
        if (nowTime.getTime() == startTime.getTime()
                || nowTime.getTime() == endTime.getTime()) {
            return true;
        }

        Calendar date = Calendar.getInstance();
        date.setTime(nowTime);

        Calendar begin = Calendar.getInstance();
        begin.setTime(startTime);

        Calendar end = Calendar.getInstance();
        end.setTime(endTime);

        if (date.after(begin) && date.before(end)) {
            return true;
        } else {
            return false;
        }
    }