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 * 030 * @see FTP 031 * @see FTPClient 032 */ 033 034public class FTPConnectionClosedException extends IOException 035{ 036 037 private static final long serialVersionUID = 3500547241659379952L; 038 039 /** Constructs a FTPConnectionClosedException with no message */ 040 public FTPConnectionClosedException() 041 { 042 } 043 044 /** 045 * Constructs a FTPConnectionClosedException with a specified message. 046 * 047 * @param message The message explaining the reason for the exception. 048 */ 049 public FTPConnectionClosedException(final String message) 050 { 051 super(message); 052 } 053 054}