將時間差（微秒）格式化成時間

參考資料：Java 毫秒轉換為（天：時：分：秒）方法

稍微做了一點修正，雖然還是覺得效率稍微差了一點，應該有些乘法可以省掉的
不過暫時先這樣就好 XD

public String timeFormatter(long ms) {
　　int ss = 1000;
　　int mi = 60000;
　　int hh = 3600000;
　　int dd = 864000000;
　　
　　long day = ms / dd;
　　long hour = (ms - day * dd) / hh;
　　long minute = (ms - day * dd - hour * hh) / mi;
　　long second = (ms - day * dd - hour * hh - minute * mi) / ss;
　　long milliSecond = ms - day * dd - hour * hh - minute * mi - second * ss;
　　String strDay = day < 10 ? "0" + day : String.valueOf(day);
　　String strHour = hour < 10 ? "0" + hour : String.valueOf(hour);
　　String strMinute = minute < 10 ? "0" + minute : String.valueOf(minute);
　　String strSecond = second < 10 ? "0" + second : String.valueOf(second);
　　String strMilliSecond = milliSecond < 10 ? "0" + milliSecond : String.valueOf(milliSecond);
　　strMilliSecond = milliSecond < 100 ? "0" + strMilliSecond : strMilliSecond;
　　return strDay + "d," + strHour + ":" + strMinute + ":" + strSecond + "." + strMilliSecond;
}