    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    }