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diff --git a/libjava/classpath/gnu/java/lang/management/RuntimeMXBeanImpl.java b/libjava/classpath/gnu/java/lang/management/RuntimeMXBeanImpl.java
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--- /dev/null
+++ b/libjava/classpath/gnu/java/lang/management/RuntimeMXBeanImpl.java
@@ -0,0 +1,197 @@
+/* RuntimeMXBeanImpl.java - Implementation of an runtime bean
+   Copyright (C) 2006 Free Software Foundation
+
+This file is part of GNU Classpath.
+
+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.
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library.  Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module.  An independent module is a module which is not derived from
+or based on this library.  If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so.  If you do not wish to do so, delete this
+exception statement from your version. */
+
+package gnu.java.lang.management;
+
+import gnu.classpath.SystemProperties;
+
+import java.lang.management.RuntimeMXBean;
+
+import java.util.Arrays;
+import java.util.Date;
+import java.util.HashMap;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Map;
+import java.util.Properties;
+
+import javax.management.NotCompliantMBeanException;
+
+/**
+ * Provides access to information about the virtual machine.
+ *
+ * @author Andrew John Hughes (gnu_andrew@member.fsf.org)
+ * @since 1.5
+ */
+public final class RuntimeMXBeanImpl
+  extends BeanImpl
+  implements RuntimeMXBean
+{
+
+  private static final String SUN_BOOT_CLASS_PATH = "sun.boot.class.path";
+  private static final String JAVA_BOOT_CLASS_PATH = "java.boot.class.path";
+
+  private long startTime = -1;
+
+  private String bootClassPath = null;
+
+  private boolean bootClassPathSupported = true;
+
+  /**
+   * Constructs a new <code>RuntimeMXBeanImpl</code>.
+   *
+   * @throws NotCompliantMBeanException if this class doesn't implement
+   *                                    the interface or a method appears
+   *                                    in the interface that doesn't comply
+   *                                    with the naming conventions.
+   */
+  public RuntimeMXBeanImpl()
+    throws NotCompliantMBeanException
+  {
+    super(RuntimeMXBean.class);
+  }
+
+  public String getBootClassPath()
+  {
+    checkMonitorPermissions();
+    if (isBootClassPathSupported())
+      return bootClassPath;
+    else
+      throw
+        new UnsupportedOperationException("Retrieving the boot " +
+                                          "classpath is not supported.");
+  }
+
+  public String getClassPath()
+  {
+    return System.getProperty("java.class.path");
+  }
+
+  public List getInputArguments()
+  {
+    checkMonitorPermissions();
+    return Arrays.asList(VMRuntimeMXBeanImpl.getInputArguments());
+  }
+
+  public String getLibraryPath()
+  {
+    return System.getProperty("java.library.path");
+  }
+
+  public String getManagementSpecVersion()
+  {
+    return "1.0";
+  }
+
+  public String getName()
+  {
+    return VMRuntimeMXBeanImpl.getName();
+  }
+
+  public String getSpecName()
+  {
+    return System.getProperty("java.vm.specification.name");
+  }
+
+  public String getSpecVendor()
+  {
+    return System.getProperty("java.vm.specification.vendor");
+  }
+
+  public String getSpecVersion()
+  {
+    return System.getProperty("java.vm.specification.version");
+  }
+
+  public long getStartTime()
+  {
+    if (startTime == -1)
+      startTime = VMRuntimeMXBeanImpl.getStartTime();
+    return startTime;
+  }
+
+  public Map getSystemProperties()
+  {
+    Map map = new HashMap();
+    Properties props = System.getProperties();
+    Iterator entries = props.entrySet().iterator();
+    while (entries.hasNext())
+      {
+        Map.Entry next = (Map.Entry) entries.next();
+        Object key = next.getKey();
+        Object value = next.getValue();
+        if (key instanceof String &&
+            value instanceof String)
+          map.put(key, value);
+      }
+    return map;
+  }
+
+  public long getUptime()
+  {
+    return new Date().getTime() - getStartTime();
+  }
+
+  public String getVmName()
+  {
+    return System.getProperty("java.vm.name");
+  }
+
+  public String getVmVendor()
+  {
+    return System.getProperty("java.vm.vendor");
+  }
+
+  public String getVmVersion()
+  {
+    return System.getProperty("java.vm.version");
+  }
+
+  public boolean isBootClassPathSupported()
+  {
+    if (bootClassPath == null)
+      {
+        bootClassPath = SystemProperties.getProperty(JAVA_BOOT_CLASS_PATH);
+        if (bootClassPath == null)
+          bootClassPath = SystemProperties.getProperty(SUN_BOOT_CLASS_PATH);
+        if (bootClassPath == null)
+          bootClassPathSupported = false;
+      }
+    return bootClassPathSupported;
+  }
+
+}