Java将时间段秒数值转化为时分秒格式

/**
*
* 将秒数转化为时分秒
* @param time 时间段对应的秒数
* @return 时分秒格式时间戳
*/
public static String secToTime(int time) {
int hour = 0;
int minute = 0;
int second = 0;
if (time <= 0) {
return "00:00";
} else {
if (time >= 3600) {
hour = time / 3600;
time = time % 3600;
}

if (time >= 60) {
minute = time / 60;
second = time % 60;
}
return timeFormat(hour) + ":" + timeFormat(minute) + ":" + timeFormat(second);
}
}

public static String timeFormat(int num) {
String retStr = null;
if (num >= 0 && num < 10) {
retStr = "0" + Integer.toString(num);
} else {
retStr = "" + num;
}
return retStr;
}