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 java.net; 19 20 /** 21 * The {@code NoRouteToHostException} will be thrown while attempting to connect 22 * to a remote host but the host cannot be reached for instance because of a 23 * badly configured router or a blocking firewall. 24 * 25 * <p>Most applications <strong>should not</strong> catch this exception; it is 26 * more robust to catch the superclass {@code SocketException}. 27 */ 28 public class NoRouteToHostException extends SocketException { 29 30 private static final long serialVersionUID = -1897550894873493790L; 31 32 /** 33 * Constructs a new instance. 34 */ NoRouteToHostException()35 public NoRouteToHostException() { 36 } 37 38 /** 39 * Constructs a new instance with the given detail message. 40 */ NoRouteToHostException(String detailMessage)41 public NoRouteToHostException(String detailMessage) { 42 super(detailMessage); 43 } 44 45 /** 46 * Constructs a new instance with given detail message and cause. 47 * @hide internal use only 48 */ NoRouteToHostException(String detailMessage, Throwable cause)49 public NoRouteToHostException(String detailMessage, Throwable cause) { 50 super(detailMessage, cause); 51 } 52 } 53