Here you can find the source of millisToDateString(Long Millis)
public static String millisToDateString(Long Millis)
//package com.java2s; import java.text.DateFormat; import java.text.SimpleDateFormat; import java.util.*; public class Main { public static final String datetimeFormat = "yyyy-MM-dd HH:mm:ss"; public static String millisToDateString(Long Millis) { Date date = millisToDate(Millis); return getFormat(datetimeFormat).format(date); }//from w ww . j a va 2 s . c o m public static Date millisToDate(Long Millis) { Calendar cad = Calendar.getInstance(); cad.setTimeInMillis(Millis); return cad.getTime(); } public static final String format(Date date, String formate) { if (date == null) { return ""; } return getFormat(formate).format(date); } public static final String format(Long dateTmie, String formate) { Date date = new Date(dateTmie); return getFormat(formate).format(date); } public static final DateFormat getFormat(String format) { return new SimpleDateFormat(format); } }