Here you can find the source of toDate(long time)
private static Date toDate(long time)
//package com.java2s; /**/*ww w . jav a2s .co m*/ * com.mckoi.database.global.CastHelper 11 Oct 2001 * * Mckoi SQL Database ( http://www.mckoi.com/database ) * Copyright (C) 2000, 2001, 2002 Diehl and Associates, Inc. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * Version 2 as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License Version 2 for more details. * * You should have received a copy of the GNU General Public License * Version 2 along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * * Change Log: * * */ import java.text.SimpleDateFormat; import java.text.ParseException; import java.text.DateFormat; import java.util.Date; public class Main { /** * Date, Time and Timestamp parser/formatters */ private static DateFormat[] date_format_sql; /** * Returns the given long value as a date object. */ private static Date toDate(long time) { return new Date(time); } /** * Parses a String as an SQL date. */ public static Date toDate(String str) { synchronized (date_format_sql) { for (int i = 0; i < date_format_sql.length; ++i) { try { return date_format_sql[i].parse(str); } catch (ParseException e) { } } throw new RuntimeException(dateErrorString("Unable to parse string as a date ", date_format_sql)); } } /** * Helper that generates an appropriate error message for a date format error. */ private static String dateErrorString(String msg, DateFormat[] df) { String pattern = ""; if (df[0] instanceof SimpleDateFormat) { SimpleDateFormat sdf = (SimpleDateFormat) df[0]; pattern = "(" + sdf.toPattern() + ")"; } return msg + pattern; } }