001 /* UnknownHostException.java -- The hostname is unknown
002 Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
003
004 This file is part of GNU Classpath.
005
006 GNU Classpath is free software; you can redistribute it and/or modify
007 it under the terms of the GNU General Public License as published by
008 the Free Software Foundation; either version 2, or (at your option)
009 any later version.
010
011 GNU Classpath is distributed in the hope that it will be useful, but
012 WITHOUT ANY WARRANTY; without even the implied warranty of
013 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
014 General Public License for more details.
015
016 You should have received a copy of the GNU General Public License
017 along with GNU Classpath; see the file COPYING. If not, write to the
018 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
019 02110-1301 USA.
020
021 Linking this library statically or dynamically with other modules is
022 making a combined work based on this library. Thus, the terms and
023 conditions of the GNU General Public License cover the whole
024 combination.
025
026 As a special exception, the copyright holders of this library give you
027 permission to link this library with independent modules to produce an
028 executable, regardless of the license terms of these independent
029 modules, and to copy and distribute the resulting executable under
030 terms of your choice, provided that you also meet, for each linked
031 independent module, the terms and conditions of the license of that
032 module. An independent module is a module which is not derived from
033 or based on this library. If you modify this library, you may extend
034 this exception to your version of the library, but you are not
035 obligated to do so. If you do not wish to do so, delete this
036 exception statement from your version. */
037
038 package java.net;
039
040 import java.io.IOException;
041
042
043 /**
044 * This exception indicates that an attempt was made to reference a hostname
045 * or IP address that is not valid. This could possibly indicate that a
046 * DNS problem has occurred, but most often means that the host was not
047 * correctly specified.
048 *
049 * @author Aaron M. Renn (arenn@urbanophile.com)
050 * @author Per Bothner
051 * @status updated to 1.4
052 */
053 public class UnknownHostException extends IOException
054 {
055 /**
056 * Compatible with JDK 1.0+.
057 */
058 private static final long serialVersionUID = -4639126076052875403L;
059
060 /**
061 * Create a new instance without a descriptive error message.
062 */
063 public UnknownHostException()
064 {
065 }
066
067 /**
068 * Create a new instance with a descriptive error message, such as the
069 * name of the host that could not be resolved.
070 *
071 * @param message a message describing the error that occurred
072 */
073 public UnknownHostException(String message)
074 {
075 super(message);
076 }
077 } // class UnknownHostException