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

 *

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 * 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.

 *

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import java.lang.management.ManagementFactory;

import java.lang.management.PlatformManagedObject;

/*

 * @test

 * @bug     8042901

 * @summary If jdk.management is present, GarbageCollectorMXBean and ThreadMXBean

 *          must be from com.sun.management.internal

 * @author  Shanliang Jiang

 */

public class CheckSomeMXBeanImplPackage {

    private static String implPackageName = "com.sun.management.internal";

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

        boolean present = false;

        try {

            Class.forName("com.sun.management.GarbageCollectorMXBean");

            present = true;

        } catch (ClassNotFoundException cnfe) {}

        if (present) {

            Class <? extends PlatformManagedObject> klazz =

                    java.lang.management.GarbageCollectorMXBean.class;

            for (Object obj :

                    ManagementFactory.getPlatformMXBeans(klazz)) {

                check(klazz.getName(), obj);

            }

            klazz = com.sun.management.GarbageCollectorMXBean.class;

            for (Object obj :

                    ManagementFactory.getPlatformMXBeans(klazz)) {

                check(klazz.getName(), obj);

            }

            klazz = java.lang.management.ThreadMXBean.class;

            check(klazz.getName(),

                    ManagementFactory.getPlatformMXBean(klazz));

            klazz = com.sun.management.ThreadMXBean.class;

            check(klazz.getName(),

                    ManagementFactory.getPlatformMXBean(klazz));

            System.out.println("--- PASSED!");

        } else {

            System.out.println("--- Skip the test, jdk.management module is not present!");

        }

    }

    private static void check(String mbeanName, Object impl) {

        if (!impl.getClass().getName().startsWith(implPackageName)) {

            throw new RuntimeException(mbeanName+" implementation package "

                    + "should be: " + implPackageName

                    + ", but got: " + impl.getClass());

        } else {

            System.out.println("--- Good, "+mbeanName+" got right implementation: " + impl);

        }

    }

}