[转]java 计算两个时间差得出：时分秒

用到：java.time，java.util两个jar包，系统默认的包

 @Test
    public void ddd(){

        LocalDateTime inDate = convertDateToLDT(DateUtils.strToDate("2021-04-13 17:45", DateUtils.YYYY_MM_DD_HH_MM));
        LocalDateTime nowDate = convertDateToLDT(DateUtils.strToDate("2021-04-13 19:30", DateUtils.YYYY_MM_DD_HH_MM));
        getMinute(inDate, nowDate);
    }

    public  String getMinute(LocalDateTime inDate, LocalDateTime nowDate) {
        Duration duration = java.time.Duration.between(inDate, nowDate);
        log.info("时间差:" + duration.getSeconds());
        long hour = duration.getSeconds() / ChronoUnit.HOURS.getDuration().getSeconds();
        long minute = (duration.getSeconds() - ChronoUnit.HOURS.getDuration().getSeconds() * hour) / ChronoUnit.MINUTES.getDuration().getSeconds();
        long second = (duration.getSeconds() - ChronoUnit.HOURS.getDuration().getSeconds() * hour) - minute * ChronoUnit.MINUTES.getDuration().getSeconds();
        log.info("时间:" + hour + ":" + minute + ":" + second);
        return hour + ":" + minute + ":" + second;
    }

    //Date转换为LocalDateTime
    public  LocalDateTime convertDateToLDT(Date date) {
        return LocalDateTime.ofInstant(date.toInstant(), ZoneId.systemDefault());
    }

    //LocalDateTime转换为Date
    public  Date convertLDTToDate(LocalDateTime time) {
        return Date.from(time.atZone(ZoneId.systemDefault()).toInstant());
    }

　　

结果：

时间差:6300

时间:1:45:0