001    /*
002     * Licensed to the Apache Software Foundation (ASF) under one or more
003     * contributor license agreements.  See the NOTICE file distributed with
004     * this work for additional information regarding copyright ownership.
005     * The ASF licenses this file to You under the Apache License, Version 2.0
006     * (the "License"); you may not use this file except in compliance with
007     * the License.  You may obtain a copy of the License at
008     *
009     *      http://www.apache.org/licenses/LICENSE-2.0
010     *
011     * Unless required by applicable law or agreed to in writing, software
012     * distributed under the License is distributed on an "AS IS" BASIS,
013     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014     * See the License for the specific language governing permissions and
015     * limitations under the License.
016     */
017    
018    package org.apache.commons.net.smtp;
019    
020    import java.io.IOException;
021    
022    /***
023     * SMTPConnectionClosedException is used to indicate the premature or
024     * unexpected closing of an SMTP connection resulting from a
025     * {@link org.apache.commons.net.smtp.SMTPReply#SERVICE_NOT_AVAILABLE SMTPReply.SERVICE_NOT_AVAILABLE }
026     *  response (SMTP reply code 421) to a
027     * failed SMTP command.  This exception is derived from IOException and
028     * therefore may be caught either as an IOException or specifically as an
029     * SMTPConnectionClosedException.
030     * <p>
031     * <p>
032     * @see SMTP
033     * @see SMTPClient
034     ***/
035    
036    public final class SMTPConnectionClosedException extends IOException
037    {
038    
039        private static final long serialVersionUID = 626520434326660627L;
040    
041        /*** Constructs a SMTPConnectionClosedException with no message ***/
042        public SMTPConnectionClosedException()
043        {
044            super();
045        }
046    
047        /***
048         * Constructs a SMTPConnectionClosedException with a specified message.
049         * <p>
050         * @param message  The message explaining the reason for the exception.
051         ***/
052        public SMTPConnectionClosedException(String message)
053        {
054            super(message);
055        }
056    
057    }