java整数(秒数)转换为时分秒格式的示例

整数(秒数)转换为时分秒格式(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;
    }