Java中整數(秒數)轉換為時分秒格式(xx:xx:xx)

整數(秒數)轉換為時分秒格式(xx:xx:xx)

// a integer to xx:xx:xx    public static String secToTime(int time) {        String timeStr = null;        int hour = 0;        int minute = 0;        int second = 0;        if (time <= 0)            return "00:00";        else {            minute = time / 60;            if (minute < 60) {                second = time % 60;                timeStr = unitFormat(minute) + ":" + unitFormat(second);            } else {                hour = minute / 60;                if (hour > 99)                    return "99:59:59";                minute = minute % 60;                second = time - hour * 3600 - minute * 60;                timeStr = unitFormat(hour) + ":" + unitFormat(minute) + ":" + unitFormat(second);            }        }        return timeStr;    }    public static String unitFormat(int i) {        String retStr = null;        if (i >= 0 && i < 10)            retStr = "0" + Integer.toString(i);        else            retStr = "" + i;        return retStr;    }