java时间加减分钟

    
    public static Date getBeforeDate(String startDate, Integer timeSolt) {
        if(StringUtils.isEmpty(startDate) || null == timeSolt){
            return null;
        }
        Date beforeDate = null;
        try {
            //方法一
            Date date = defaultFormat(startDate);
            Calendar calendar = Calendar.getInstance();
            calendar.setTime(date);
            calendar.add(Calendar.MINUTE, timeSolt);
            beforeDate = calendar.getTime();
            System.out.println("1111----"+beforeDate);
            //方法二
            Long time = timeSolt*60*1000L;
            Date beforeDate2 = new Date(date.getTime() + time);
            System.out.println("2222----"+beforeDate2);
        }catch (ParseException e){
            e.printStackTrace();
        }
        return beforeDate;
    }

    //字符串转date
    public static Date defaultFormat(String dateStr) throws ParseException {
        if ((StringUtils.isBlank(dateStr))) {
            return null;
        }
        SimpleDateFormat simple = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        return simple.parse(dateStr);
    }


    public static void main(String[] args) {
        getBeforeDate("2022-06-21 17:31:58",1);
    }

参考：https://www.jb51.net/article/193342.htm