| /* 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")); |
| } |
| } |