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/* TestMemory.java -- Tests the memory bean.

   Copyright (C) 2006 Free Software Foundation, Inc.

This file is part of GNU Classpath examples.

GNU Classpath is free software; you can redistribute it and/or modify

it under the terms of the GNU General Public License as published by

the Free Software Foundation; either version 2, or (at your option)

any later version.

GNU Classpath 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 for more details.

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

along with GNU Classpath; see the file COPYING.  If not, write to the

Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA

02110-1301 USA. */

package gnu.classpath.examples.management;

import java.lang.management.MemoryMXBean;

import java.lang.management.ManagementFactory;

public class TestMemory

{

  public static void main(String[] args)

  {

    MemoryMXBean bean = ManagementFactory.getMemoryMXBean();

    System.out.println("Bean: " + bean);

    System.out.println("Heap memory usage: "

                       + bean.getHeapMemoryUsage());

    System.out.println("Non-heap memory usage: "

                       + bean.getNonHeapMemoryUsage());

    System.out.println("Objects pending finalization: "

                       + bean.getObjectPendingFinalizationCount());

    System.out.println("Running garbage collector via bean...");

    bean.gc();

    System.out.println("Heap memory usage: "

                       + bean.getHeapMemoryUsage());

    System.out.println("Non-heap memory usage: "

                       + bean.getNonHeapMemoryUsage());

    System.out.println("Objects pending finalization: "

                       + bean.getObjectPendingFinalizationCount());

    boolean verbosity = bean.isVerbose();

    System.out.println("Verbose memory output: " + (verbosity ? "yes" : "no"));

    System.out.println("Changing verbose setting...");

    bean.setVerbose(!verbosity);

    System.out.println("Verbose memory output: " + (bean.isVerbose() ? "yes" : "no"));

  }

}