Java毫秒轉換成日期格式

import java.text.SimpleDateFormat;import java.util.Calendar;import java.util.Date;import java.util.GregorianCalendar;public class Demo {/** * @param args */public static void main(String[] args) {// TODO Auto-generated method stubSystem.out.println(converLongTimeToStr(3630000));}/** * 轉換毫秒數成“分、秒”，如“01:53”。若超過60分鐘則顯示“時、分、秒”，如“01:01:30 *  * @param 待轉換的毫秒數 * */public static String converLongTimeToStr(long time) {int ss = 1000;int mi = ss * 60;int hh = mi * 60;long hour = (time) / hh;long minute = (time - hour * hh) / mi;long second = (time - hour * hh - minute * mi) / ss;String strHour = hour < 10 ? "0" + hour : "" + hour;String strMinute = minute < 10 ? "0" + minute : "" + minute;String strSecond = second < 10 ? "0" + second : "" + second;if (hour > 0) {return strHour + ":" + strMinute + ":" + strSecond;} else {return strMinute + ":" + strSecond;}}}