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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  }