Here you can find the source of isURLExists(String URLName)
public static boolean isURLExists(String URLName)
//package com.java2s; /*/*from ww w. j ava2 s . c o m*/ * * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF licenses this file * to you under the Apache License, Version 2.0 (the * "License"); you may not use this file except in compliance * with the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, * software distributed under the License is distributed on an * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY * KIND, either express or implied. See the License for the * specific language governing permissions and limitations * under the License. * */ import java.net.HttpURLConnection; import java.net.SocketTimeoutException; import java.net.URL; public class Main { public static boolean isURLExists(String URLName) { try { if (!URLName.toUpperCase().contains("HTTP")) URLName = "http://" + URLName; URL url = new URL(URLName); System.setProperty("java.net.useSystemProxies", "true"); HttpURLConnection urlConn = (HttpURLConnection) url .openConnection(); urlConn.setConnectTimeout(9000); urlConn.setReadTimeout(9000); urlConn.connect(); if (HttpURLConnection.HTTP_OK == urlConn.getResponseCode()) return true; else return false; } catch (SocketTimeoutException e) { return false; } catch (Exception e) { e.printStackTrace(); return false; } } }