Here you can find the source of parseDT(String s, boolean end)
public static Date parseDT(String s, boolean end)
//package com.java2s; /* ***** BEGIN LICENSE BLOCK ***** * Version: MPL 1.1/GPL 2.0/LGPL 2.1/*from w w w.ja v a2s . c o m*/ * * The contents of this file are subject to the Mozilla Public License Version * 1.1 (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * http://www.mozilla.org/MPL/ * * Software distributed under the License is distributed on an "AS IS" basis, * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License * for the specific language governing rights and limitations under the * License. * * The Original Code is part of dcm4che, an implementation of DICOM(TM) in * Java(TM), hosted at http://sourceforge.net/projects/dcm4che. * * The Initial Developer of the Original Code is * Gunter Zeilinger, Huetteldorferstr. 24/10, 1150 Vienna/Austria/Europe. * Portions created by the Initial Developer are Copyright (C) 2002-2005 * the Initial Developer. All Rights Reserved. * * Contributor(s): * Gunter Zeilinger <gunterze@gmail.com> * * Alternatively, the contents of this file may be used under the terms of * either the GNU General Public License Version 2 or later (the "GPL"), or * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), * in which case the provisions of the GPL or the LGPL are applicable instead * of those above. If you wish to allow use of your version of this file only * under the terms of either the GPL or the LGPL, and not to allow others to * use your version of this file under the terms of the MPL, indicate your * decision by deleting the provisions above and replace them with the notice * and other provisions required by the GPL or the LGPL. If you do not delete * the provisions above, a recipient may use your version of this file under * the terms of any one of the MPL, the GPL or the LGPL. * * ***** END LICENSE BLOCK ***** */ import java.util.Calendar; import java.util.Date; import java.util.GregorianCalendar; import java.util.TimeZone; public class Main { public static Date parseDT(String s, boolean end) { if (s == null || s.length() == 0) { return null; } Calendar c = new GregorianCalendar(); c.clear(); if (end) { setToDec31(c); setTo2359(c); } int len = s.length(); if (len >= 5) { final char tzsign = s.charAt(len - 5); if (tzsign == '+' || tzsign == '-') { len -= 5; c.setTimeZone(TimeZone.getTimeZone("GMT" + s.substring(len))); } } int pos = parseDA(c, s, 0, len); if (pos + 2 <= len) { parseTM(c, s, pos, len); } return c.getTime(); } private static void setToDec31(Calendar c) { c.set(Calendar.MONTH, 11); c.set(Calendar.DAY_OF_MONTH, 31); setTo2359(c); } private static void setTo2359(Calendar c) { c.set(Calendar.HOUR_OF_DAY, 23); c.set(Calendar.MINUTE, 59); c.set(Calendar.SECOND, 59); c.set(Calendar.MILLISECOND, 999); } public static Date parseDA(String s, boolean end) { if (s == null || s.length() == 0) return null; Calendar c = new GregorianCalendar(); c.clear(); if (end) { setToDec31(c); } parseDA(c, s, 0, s.length()); return c.getTime(); } private static int parseDA(Calendar c, String s, int off, int len) { int pos = off; c.set(Calendar.YEAR, Integer.parseInt(s.substring(pos, pos += 4))); if (pos < len) { if (!Character.isDigit(s.charAt(pos))) ++pos; if (pos + 2 <= len) { c.set(Calendar.MONTH, Integer.parseInt(s.substring(pos, pos += 2)) - 1); if (pos < len) { if (!Character.isDigit(s.charAt(pos))) ++pos; if (pos + 2 <= len) { c.set(Calendar.DAY_OF_MONTH, Integer.parseInt(s .substring(pos, pos += 2))); } } } } return pos; } /** * Parses a value that has a TM VR as a {@link Date}. * * @param s the TM string to parse. * @param end whether or not to initialize missing precision to the maximum values (December * 31st, 23:59). * @return the parsed date or <code>null</code> if the input is empty. */ public static Date parseTM(String s, boolean end) { if (s == null || s.length() == 0) { return null; } Calendar c = new GregorianCalendar(); c.clear(); if (end) { setTo2359(c); } parseTM(c, s, 0, s.length()); return c.getTime(); } private static int parseTM(Calendar c, String s, int off, int len) { int pos = off; String hours = s.substring(pos, pos += 2); c.set(Calendar.HOUR_OF_DAY, Integer.parseInt(hours)); if (pos < len) { if (!Character.isDigit(s.charAt(pos))) { ++pos; } if (pos + 2 <= len) { String minutes = s.substring(pos, pos += 2); c.set(Calendar.MINUTE, Integer.parseInt(minutes)); if (pos < len) { if (!Character.isDigit(s.charAt(pos))) { ++pos; } if (pos + 2 <= len) { String seconds = s.substring(pos, pos += 2); c.set(Calendar.SECOND, Integer.parseInt(seconds)); if (pos + 1 < len) { String micros = s.substring(pos + 1, Math.min(len, pos + 5)); while (micros.length() < 4) { micros += '0'; } int millis = roundMicrosToMillis(micros); c.set(Calendar.MILLISECOND, millis); } } } } } return pos; } private static int roundMicrosToMillis(String micros) { assert micros != null && micros.length() == 4; double dblMicros = Integer.valueOf(micros).doubleValue(); return (int) Math.round(dblMicros / 10.0); } }