/* * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. * * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved. * * The contents of this file are subject to the terms of either the GNU * General Public License Version 2 only ("GPL") or the Common Development * and Distribution License("CDDL") (collectively, the "License").  You * may not use this file except in compliance with the License. You can obtain * a copy of the License at https://glassfish.dev.java.net/public/CDDL+GPL.html * or glassfish/bootstrap/legal/LICENSE.txt.  See the License for the specific * language governing permissions and limitations under the License. * * When distributing the software, include this License Header Notice in each * file and include the License file at glassfish/bootstrap/legal/LICENSE.txt. * Sun designates this particular file as subject to the "Classpath" exception * as provided by Sun in the GPL Version 2 section of the License file that * accompanied this code.  If applicable, add the following below the License * Header, with the fields enclosed by brackets [] replaced by your own * identifying information: "Portions Copyrighted [year] * [name of copyright owner]" * * Contributor(s): * * If you wish your version of this file to be governed by only the CDDL or * only the GPL Version 2, indicate your decision by adding "[Contributor] * elects to include this software in this distribution under the [CDDL or GPL * Version 2] license."  If you don't indicate a single choice of license, a * recipient has the option to distribute your version of this file under * either the CDDL, the GPL Version 2 or to extend the choice of license to * its licensees as provided above.  However, if you add GPL Version 2 code * and therefore, elected the GPL Version 2 license, then the option applies * only if the new code is made subject to such option by the copyright * holder. *//* * @(#)NewsAddress.java	1.10 07/05/04 */package javax.mail.internet;import java.util.Vector;import java.util.StringTokenizer;import java.util.Locale;import javax.mail.*;/** * This class models an RFC1036 newsgroup address. * * @author Bill Shannon * @author John Mani */public class NewsAddress extends Address {    protected String newsgroup;    protected String host;	// may be null    private static final long serialVersionUID = -4203797299824684143L;    /**     * Default constructor.     */    public NewsAddress() { }    /**     * Construct a NewsAddress with the given newsgroup.     *     * @param newsgroup	the newsgroup     */    public NewsAddress(String newsgroup) {	this(newsgroup, null);    }    /**     * Construct a NewsAddress with the given newsgroup and host.     *     * @param newsgroup	the newsgroup     * @param host	the host     */    public NewsAddress(String newsgroup, String host) {	this.newsgroup = newsgroup;	this.host = host;    }    /**     * Return the type of this address.  The type of a NewsAddress     * is "news".     */    public String getType() {	return "news";    }    /**     * Set the newsgroup.     *     * @param	newsgroup	the newsgroup     */    public void setNewsgroup(String newsgroup) {	this.newsgroup = newsgroup;    }    /**     * Get the newsgroup.     *     * @return	newsgroup     */    public String getNewsgroup() {	return newsgroup;    }    /**     * Set the host.     *     * @param	host	the host     */    public void setHost(String host) {	this.host = host;    }    /**     * Get the host.     *     * @return	host     */    public String getHost() {	return host;    }    /**     * Convert this address into a RFC 1036 address.     *     * @return		newsgroup     */    public String toString() {	return newsgroup;    }    /**     * The equality operator.     */    public boolean equals(Object a) {	if (!(a instanceof NewsAddress))	    return false;	NewsAddress s = (NewsAddress)a;	return newsgroup.equals(s.newsgroup) &&	    ((host == null && s.host == null) ||	     (host != null && s.host != null && host.equalsIgnoreCase(s.host)));    }    /**     * Compute a hash code for the address.     */    public int hashCode() {	int hash = 0;	if (newsgroup != null)	    hash += newsgroup.hashCode();	if (host != null)	    hash += host.toLowerCase(Locale.ENGLISH).hashCode();	return hash;    }    /**     * Convert the given array of NewsAddress objects into     * a comma separated sequence of address strings. The     * resulting string contains only US-ASCII characters, and     * hence is mail-safe.     *     * @param addresses	array of NewsAddress objects     * @exception   	ClassCastException, if any address object in the     *              	given array is not a NewsAddress objects. Note     *              	that this is a RuntimeException.     * @return	    	comma separated address strings     */    public static String toString(Address[] addresses) {	if (addresses == null || addresses.length == 0)	    return null;	StringBuffer s = 		new StringBuffer(((NewsAddress)addresses[0]).toString());	for (int i = 1; i < addresses.length; i++)	    s.append(",").append(((NewsAddress)addresses[i]).toString());		return s.toString();    }    /**     * Parse the given comma separated sequence of newsgroup into     * NewsAddress objects.     *     * @param newsgroups	comma separated newsgroup string     * @return			array of NewsAddress objects     * @exception		AddressException if the parse failed     */    public static NewsAddress[] parse(String newsgroups) 				throws AddressException {	// XXX - verify format of newsgroup name?	StringTokenizer st = new StringTokenizer(newsgroups, ",");	Vector nglist = new Vector();	while (st.hasMoreTokens()) {	    String ng = st.nextToken();	    nglist.addElement(new NewsAddress(ng));	}	int size = nglist.size();	NewsAddress[] na = new NewsAddress[size];	if (size > 0)	    nglist.copyInto(na);	return na;    }}