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