/* * Copyright (c) 1999, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ /* * @test * @author Gary Ellison * @bug 4208282 * @summary java.net.InetAddress.getByName caching unknown host lookups */ import java.net.InetAddress; public class CachedUnknownHostName { public static void main(String argv[]) throws Exception { String hostname = new String("bogusHostName"); try { InetAddress.getByName(hostname); System.err.println("Missing java.net.UnknownHostException for host " + hostname); throw new Exception("Missing java.net.UnknownHostException"); } catch(java.net.UnknownHostException e) { // this one is anticipated System.out.println("Caught expected exception:" + e); } try { InetAddress.getByName(hostname); System.err.println("Missing java.net.UnknownHostException for host " + hostname); throw new Exception("Missing java.net.UnknownHostException"); } catch(java.net.UnknownHostException e) { // this is the one that was not firing off. System.out.println("Caught expected exception:" + e); } System.out.println("Passed. OKAY"); } }