1 /*

     2  * Copyright (c) 2015, 2018, 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 HelloExt {

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

    29 

    30        String className = "javax.annotation.processing.FilerException";

    31        Class cls = Class.forName(className);

    32 

    33        ClassLoader loader = cls.getClassLoader();

    34        if (loader != ClassLoader.getPlatformClassLoader()) {

    35            throw new java.lang.RuntimeException(className + " should be load by PlatformClassLoader but it is loaded by " + loader);

    36        }

    37 

    38        WhiteBox wb = WhiteBox.getWhiteBox();

    39        if (wb.isSharedClass(cls)) {

    40            System.out.println("As expected, " + className + " is in shared space.");

    41        } else {

    42            throw new java.lang.RuntimeException(className + " is not in shared space.");

    43        }

    44 

    45        className = "[Ljava.lang.Comparable;";

    46        cls = Class.forName(className);

    47        loader = cls.getClassLoader();

    48        if (loader != null) {

    49            throw new java.lang.RuntimeException(className + " should be load by the NULL class loader but it is loaded by " + loader);

    50        }

    51 

    52        if (wb.isSharedClass(cls)) {

    53            System.out.println("As expected, " + className + " is in shared space.");

    54        } else {

    55            throw new java.lang.RuntimeException(className + " is not in shared space.");

    56        }

    57    }

    58 }

    59