Java 计算两个日期时间差(天数、时、分、秒、毫秒)

/**
     * 统计两个时间的时间差
     * two-one
     * 相差几秒几毫秒
     */
    public static String getDistanceDateTime(Date one, Date two) {
        long day = 0;//天数差
        long hour = 0;//小时数差
        long min = 0;//分钟数差
        long second=0;//秒数差
        long diff=0 ;//毫秒差
        String result = "";
        final Calendar c = Calendar.getInstance();
        c.setTimeZone(TimeZone.getTimeZone("GMT+8:00"));
        c.setTime(one);
        long time1 = one.getTime();
        long time2 = two.getTime();
        diff = time2 - time1;
        day = diff / (24 * 60 * 60 * 1000);
        hour = (diff / (60 * 60 * 1000) - day * 24);
        min = ((diff / (60 * 1000)) - day * 24 * 60 - hour * 60);
        second = diff/1000;
        System.out.println("day="+day+" hour="+hour+" min="+min+" ss="+second%60+" SSS="+diff%1000);
        String daystr = day%30+"天";
        String hourStr = hour%24+"小时";
        String minStr = min%60+"分";
        String secondStr = second%60+"秒";
        if (day!=0){
            result = result + daystr;
        }
        if (hour!=0){
            result = result + hourStr;
        }
        if (min!=0){
            result = result + minStr;
        }
        if (second!=0){
            result = result + secondStr;
        }
        return result;
    }

/**
     * 统计两个时间的时间差
     * two-one
     * 相差几秒几毫秒
     */
    public static String getDistanceTime(String str1, String str2) {
        SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss:SSS");
        Date one;
        Date two;
        long day = 0;//天数差
        long hour = 0;//小时数差
        long min = 0;//分钟数差
        long second=0;//秒数差
        long diff=0 ;//毫秒差
        String result = "";
        try {
            final Calendar c = Calendar.getInstance();
            c.setTimeZone(TimeZone.getTimeZone("GMT+8:00"));
            one = df.parse(str1);
            c.setTime(one);
            two = df.parse(str2);
            long time1 = one.getTime();
            long time2 = two.getTime();
            diff = time2 - time1;
            day = diff / (24 * 60 * 60 * 1000);
            hour = (diff / (60 * 60 * 1000) - day * 24);
            min = ((diff / (60 * 1000)) - day * 24 * 60 - hour * 60);
            second = diff/1000;
            System.out.println("day="+day+" hour="+hour+" min="+min+" ss="+second%60+" SSS="+diff%1000);
            String daystr = day%30+"天";
            String hourStr = hour%24+"小时";
            String minStr = min%60+"分";
            String secondStr = second%60+"秒";
            if (day!=0){
                result = result + daystr;
            }
            if (hour!=0){
                result = result + hourStr;
            }
            if (min!=0){
                result = result + minStr;
            }
            if (second!=0){
                result = result + secondStr;
            }
        } catch (ParseException e) {
            e.printStackTrace();
        }
        return result;
    }

上述方法是根据别人文章改进得来  原本的只是返回了秒和毫秒  而且没做判断  我这边改进了下

贴一下原文地址

Java 计算两个日期时间差(天数、时、分、秒、毫秒) - 猿视野