Java tutorial
//package com.java2s; /* * CDDL HEADER START * * The contents of this file are subject to the terms of the Common Development and Distribution License, Version 1.0 * only (the "License"). You may not use this file except in compliance with the License. * * You can obtain a copy of the license at license/ESCIDOC.LICENSE or http://www.escidoc.de/license. See the License for * the specific language governing permissions and limitations under the License. * * When distributing Covered Code, include this CDDL HEADER in each file and include the License file at * license/ESCIDOC.LICENSE. If applicable, add the following below this CDDL HEADER, with the fields enclosed by * brackets "[]" replaced with your own identifying information: Portions Copyright [yyyy] [name of copyright owner] * * CDDL HEADER END * * Copyright 2006-2011 Fachinformationszentrum Karlsruhe Gesellschaft fuer wissenschaftlich-technische Information mbH * and Max-Planck-Gesellschaft zur Foerderung der Wissenschaft e.V. All rights reserved. Use is subject to license * terms. */ import java.util.regex.Matcher; import java.util.regex.Pattern; public class Main { private static final Pattern PATTERN_VERSION_NUMBER = Pattern.compile("[a-zA-Z]+:[a-zA-Z0-9]+:([0-9]+)"); /** * Extract version number from objid. * * @param objid The objid. * @return The number of version or null. */ public static String getVersionNumberFromObjid(final CharSequence objid) { String version = null; final Matcher m = PATTERN_VERSION_NUMBER.matcher(objid); if (m.find()) { version = m.group(1); } return version; } }