001--时间工具

1.快速的判断时间的间隔

    void printDateIntervalToSecond(Date startDate,Date endDate){
        long between = endDate.getTime() - startDate.getTime();
        long day = between / (24 * 60 * 60 * 1000);
        long hour = (between / (60 * 60 * 1000) - day * 24);
        long min = ((between / (60 * 1000)) - day * 24 * 60 - hour * 60);
        long s = (between / 1000 - day * 24 * 60 * 60 - hour * 60 * 60 - min * 60);
        long ms = (between - day * 24 * 60 * 60 * 1000 - hour * 60 * 60 * 1000 - min * 60 * 1000 - s * 1000);
        System.out.println(day + "天" + hour + "小时" + min + "分" + s + "秒" + ms + "毫秒");  
    }