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    1   /*
    2    * Copyright 2001-2005 The Apache Software Foundation
    3    *
    4    * Licensed under the Apache License, Version 2.0 (the "License");
    5    * you may not use this file except in compliance with the License.
    6    * You may obtain a copy of the License at
    7    *
    8    *     http://www.apache.org/licenses/LICENSE-2.0
    9    *
    10   * Unless required by applicable law or agreed to in writing, software
    11   * distributed under the License is distributed on an "AS IS" BASIS,
    12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13   * See the License for the specific language governing permissions and
    14   * limitations under the License.
    15   */
    16  package org.apache.commons.net.ftp;
    17  import java.io.IOException;
    18
    19  /****
    20   * FTPConnectionClosedException is used to indicate the premature or
    21   * unexpected closing of an FTP connection resulting from a
    22   * {@link org.apache.commons.net.ftp.FTPReply#SERVICE_NOT_AVAILABLE FTPReply.SERVICE_NOT_AVAILABLE }
    23   *  response (FTP reply code 421) to a
    24   * failed FTP command.  This exception is derived from IOException and
    25   * therefore may be caught either as an IOException or specifically as an
    26   * FTPConnectionClosedException.
    27   * <p>
    28   * <p>
    29   * @author Daniel F. Savarese
    30   * @see FTP
    31   * @see FTPClient
    32   ***/
    33
    34  public class FTPConnectionClosedException extends IOException
    35  {
    36
    37      /**** Constructs a FTPConnectionClosedException with no message ***/
    38      public FTPConnectionClosedException()
    39      {
    40          super();
    41      }
    42
    43      /****
    44       * Constructs a FTPConnectionClosedException with a specified message.
    45       * <p>
    46       * @param message  The message explaining the reason for the exception.
    47       ***/
    48      public FTPConnectionClosedException(String message)
    49      {
    50          super(message);
    51      }
    52
    53  }