1 /* TestMemory.java -- Tests the memory bean.
2 Copyright (C) 2006 Free Software Foundation, Inc.
4 This file is part of GNU Classpath examples.
6 GNU Classpath is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
11 GNU Classpath is distributed in the hope that it will be useful, but
12 WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GNU Classpath; see the file COPYING. If not, write to the
18 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
21 package gnu.classpath.examples.management;
23 import java.lang.management.MemoryMXBean;
24 import java.lang.management.ManagementFactory;
26 public class TestMemory
28 public static void main(String[] args)
30 MemoryMXBean bean = ManagementFactory.getMemoryMXBean();
31 System.out.println("Bean: " + bean);
32 System.out.println("Heap memory usage: "
33 + bean.getHeapMemoryUsage());
34 System.out.println("Non-heap memory usage: "
35 + bean.getNonHeapMemoryUsage());
36 System.out.println("Objects pending finalization: "
37 + bean.getObjectPendingFinalizationCount());
38 System.out.println("Running garbage collector via bean...");
40 System.out.println("Heap memory usage: "
41 + bean.getHeapMemoryUsage());
42 System.out.println("Non-heap memory usage: "
43 + bean.getNonHeapMemoryUsage());
44 System.out.println("Objects pending finalization: "
45 + bean.getObjectPendingFinalizationCount());
46 boolean verbosity = bean.isVerbose();
47 System.out.println("Verbose memory output: " + (verbosity ? "yes" : "no"));
48 System.out.println("Changing verbose setting...");
49 bean.setVerbose(!verbosity);
50 System.out.println("Verbose memory output: " + (bean.isVerbose() ? "yes" : "no"));