1 /*

     2  * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * questions.

    22  */

    23 

    24 /* @test

    25  * @bug 7003398

    26  * @run main/othervm Equals

    27  */

    28 import java.net.NetworkInterface;

    29 import java.net.InetAddress;

    30 import java.util.Enumeration;

    31 import java.util.HashMap;

    32 

    33 public class Equals {

    34 

    35     public static void main(String args[]) throws Exception {

    36 

    37         Enumeration nifs1 = NetworkInterface.getNetworkInterfaces();

    38         HashMap<String,Integer> hashes = new HashMap<>();

    39         HashMap<String,NetworkInterface> nicMap = new HashMap<>();

    40 

    41         while (nifs1.hasMoreElements()) {

    42             NetworkInterface ni = (NetworkInterface)nifs1.nextElement();

    43             hashes.put(ni.getName(),ni.hashCode());

    44             nicMap.put(ni.getName(),ni);

    45         }

    46 

    47         System.setSecurityManager(new SecurityManager());

    48 

    49         Enumeration nifs2 = NetworkInterface.getNetworkInterfaces();

    50         while (nifs2.hasMoreElements()) {

    51             NetworkInterface ni = (NetworkInterface)nifs2.nextElement();

    52             NetworkInterface niOrig = nicMap.get(ni.getName());

    53 

    54             int h = hashes.get(ni.getName());

    55             if (h != ni.hashCode()) {

    56                 throw new RuntimeException ("Hashcodes different for " +

    57                         ni.getName());

    58             }

    59             if (!ni.equals(niOrig)) {

    60                 throw new RuntimeException ("equality different for " +

    61                         ni.getName());

    62             }

    63         }

    64     }

    65 }