    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
    018package org.apache.commons.net.ftp;
    019import java.io.IOException;
    020
    021/***
    022 * FTPConnectionClosedException is used to indicate the premature or
    023 * unexpected closing of an FTP connection resulting from a
    024 * {@link org.apache.commons.net.ftp.FTPReply#SERVICE_NOT_AVAILABLE FTPReply.SERVICE_NOT_AVAILABLE }
    025 *  response (FTP reply code 421) to a
    026 * failed FTP command.  This exception is derived from IOException and
    027 * therefore may be caught either as an IOException or specifically as an
    028 * FTPConnectionClosedException.
    029 * <p>
    030 * <p>
    031 * @see FTP
    032 * @see FTPClient
    033 ***/
    034
    035public class FTPConnectionClosedException extends IOException
    036{
    037
    038    private static final long serialVersionUID = 3500547241659379952L;
    039
    040    /*** Constructs a FTPConnectionClosedException with no message ***/
    041    public FTPConnectionClosedException()
    042    {
    043        super();
    044    }
    045
    046    /***
    047     * Constructs a FTPConnectionClosedException with a specified message.
    048     * <p>
    049     * @param message  The message explaining the reason for the exception.
    050     ***/
    051    public FTPConnectionClosedException(String message)
    052    {
    053        super(message);
    054    }
    055
    056}