001    /*
002     * Copyright 2001-2005 The Apache Software Foundation
003     *
004     * Licensed under the Apache License, Version 2.0 (the "License");
005     * you may not use this file except in compliance with the License.
006     * You may obtain a copy of the License at
007     *
008     *     http://www.apache.org/licenses/LICENSE-2.0
009     *
010     * Unless required by applicable law or agreed to in writing, software
011     * distributed under the License is distributed on an "AS IS" BASIS,
012     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013     * See the License for the specific language governing permissions and
014     * limitations under the License.
015     */
016    package org.apache.commons.net.smtp;
017    
018    import java.io.IOException;
019    
020    /***
021     * SMTPConnectionClosedException is used to indicate the premature or
022     * unexpected closing of an SMTP connection resulting from a
023     * {@link org.apache.commons.net.smtp.SMTPReply#SERVICE_NOT_AVAILABLE SMTPReply.SERVICE_NOT_AVAILABLE }
024     *  response (SMTP reply code 421) to a
025     * failed SMTP command.  This exception is derived from IOException and
026     * therefore may be caught either as an IOException or specifically as an
027     * SMTPConnectionClosedException.
028     * <p>
029     * <p>
030     * @author Daniel F. Savarese
031     * @see SMTP
032     * @see SMTPClient
033     ***/
034    
035    public final class SMTPConnectionClosedException extends IOException
036    {
037    
038        /*** Constructs a SMTPConnectionClosedException with no message ***/
039        public SMTPConnectionClosedException()
040        {
041            super();
042        }
043    
044        /***
045         * Constructs a SMTPConnectionClosedException with a specified message.
046         * <p>
047         * @param message  The message explaining the reason for the exception.
048         ***/
049        public SMTPConnectionClosedException(String message)
050        {
051            super(message);
052        }
053    
054    }