1 /*

     2  * Copyright (c) 2015, 2019, 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 

    25 import sun.hotspot.WhiteBox;

    26 

    27 public class UnintendedLoaders {

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

    29         ClassLoader loaders[] = new ClassLoader[2];

    30         loaders[0] = UnintendedLoaders.class.getClassLoader(); // app loader

    31         loaders[1] = loaders[0].getParent();                   // platform loader

    32 

    33         String[] names = {

    34             "CustomLoadee",

    35         };

    36 

    37 

    38         for (int i=0; i<3; i++) {

    39             for (String s : names) {

    40                 try {

    41                     if (i <= 1) {

    42                         System.out.println(loaders[i].loadClass(s));

    43                     } else {

    44                         System.out.println(Class.forName(s));

    45                     }

    46                 } catch (ClassNotFoundException e) {

    47                     System.out.println("Expected exception:" + e);

    48                     continue;

    49                 }

    50                 throw new RuntimeException("The class \"" + s + "\" should not be resolved by the application or platform class loader");

    51             }

    52         }

    53     }

    54 }