1 /* 2 * Licensed to the Apache Software Foundation (ASF) under one or more 3 * contributor license agreements. See the NOTICE file distributed with 4 * this work for additional information regarding copyright ownership. 5 * The ASF licenses this file to You under the Apache License, Version 2.0 6 * (the "License"); you may not use this file except in compliance with 7 * the License. You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 */ 17 18 package org.apache.commons.net.ftp; 19 20 import java.io.IOException; 21 22 /** 23 * FTPConnectionClosedException is used to indicate the premature or unexpected closing of an FTP connection resulting from a 24 * {@link org.apache.commons.net.ftp.FTPReply#SERVICE_NOT_AVAILABLE FTPReply.SERVICE_NOT_AVAILABLE } response (FTP reply code 421) to a failed FTP command. This 25 * exception is derived from IOException and therefore may be caught either as an IOException or specifically as an FTPConnectionClosedException. 26 * 27 * @see FTP 28 * @see FTPClient 29 */ 30 31 public class FTPConnectionClosedException extends IOException { 32 33 private static final long serialVersionUID = 3500547241659379952L; 34 35 /** Constructs a FTPConnectionClosedException with no message */ 36 public FTPConnectionClosedException() { 37 } 38 39 /** 40 * Constructs a FTPConnectionClosedException with a specified message. 41 * 42 * @param message The message explaining the reason for the exception. 43 */ 44 public FTPConnectionClosedException(final String message) { 45 super(message); 46 } 47 48 }