llvm-gcc-4.2/libjava/classpath/examples/gnu/classpath/examples/management/TestGarbageCollector.java

/* TestGarbageCollector.java -- Tests the garbage collector beans.
   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.GarbageCollectorMXBean;
import java.lang.management.ManagementFactory;

import java.util.Arrays;
import java.util.Iterator;

public class TestGarbageCollector
{

  public static void main(String[] args)
  {
    Iterator beans = ManagementFactory.getGarbageCollectorMXBeans().iterator();
    while (beans.hasNext())
      {
	GarbageCollectorMXBean bean = (GarbageCollectorMXBean) beans.next();
	System.out.println("Bean: " + bean);
	System.out.println("Name: " + bean.getName());
	System.out.println("Memory pool names: " 
			   + Arrays.toString(bean.getMemoryPoolNames()));
	System.out.println("Is valid: " 
			   + (bean.isValid() ? "yes" : "no"));
	System.out.println("Collection count: " 
			   + bean.getCollectionCount());
	System.out.println("Collection time: " 
			   + bean.getCollectionTime() + "ms");
      }
  }
}