判断2个时间段，是否有重复

    
    private static Boolean judgingTimeRepetition(Date startTime1, Date endTime1,
                                                 Date startTime2, Date endTime2) {
        long start1 = startTime1.getTime();
        long end1 = endTime1.getTime();
        long start2 = startTime2.getTime();
        long end2 = endTime2.getTime();
        if (start1 <= end2 && end1 >= start2) {
            return false;
        }
        return true;
    }

    public static void main(String[] args) throws ParseException {
        Date startTime1 = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").parse("2022-07-28 01:00:00");
        Date endTime1 = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").parse("2022-07-28 02:30:00");
        Date startTime2 = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").parse("2022-07-28 02:30:01");
        Date endTime2 = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").parse("2022-07-28 03:00:00");
        System.out.println(judgingTimeRepetition(startTime1, endTime1, startTime2, endTime2));
    }

startdate1 <=enddate2 and enddate1>=startdate2

若你⽆法理解上⾯这种⽅法，那我还有下⾯的⽅法提供给你：

(startdate1 BETWEEN startdate2 AND enddate2)
or (enddate1 BETWEEN startdate2 AND enddate2)
or (startdate2 BETWEEN startdate1 AND enddate1)
or (enddate2 BETWEEN startdate1 AND enddate1)