Java tutorial
//package com.java2s; import java.text.SimpleDateFormat; import java.util.Date; import java.util.Locale; public class Main { public static String formatDate(String format, Long time) { return formatDate(new SimpleDateFormat(format, Locale.CHINA), time); } public static String formatDate(SimpleDateFormat format, Long time) { if (null == time || time <= 0) { return ""; } return format.format(new Date(String.valueOf(time).length() == 13 ? time : time * 1000)); } }