MBeanServer mbs = MBeanServerFactory.createMBeanServer(); 
         String domain = mbs.getDefaultDomain(); 
         
         MemoryMXBean obean = ManagementFactory.getMemoryMXBean(); 
         ObjectName on = new ObjectName(domain+":type=abc"); //名字只是个key,只要客户端与之对应就找得到 
         mbs.registerMBean(obean, on); 

MemoryMXBean proxy = JMX.newMXBeanProxy(mbsc, stdMBeanName, MemoryMXBean.class); 
//注意上面多了个X,因为是查找Open MBean,其他类型应该使用newMBeanProxy 

JMXConnector jmxc =...;
jmxc.addConnectionNotificationListener(new NotificationListener(){

				public void handleNotification(Notification notification, Object handback)
				{			
					//jmx.remote.connection.closed---Client has been closed
					log(notification.getType() + "---" + notification.getMessage());					
				}}, null, null);

//这个方法是sun私有的，没有公开 
public static void showMonitoredVMs() 
{ 
     MonitoredHost host; 
     Set vms; 
     try 
     { 
         host = MonitoredHost.getMonitoredHost(new HostIdentifier((String) null)); 
         vms = host.activeVms(); 
     } 
     catch (java.net.URISyntaxException sx) 
     { 
         throw new InternalError(sx.getMessage()); 
     } 
     catch (MonitorException mx) 
     { 
         throw new InternalError(mx.getMessage()); 
     } 
     for (Object vmid : vms) 
     { 
         if (vmid instanceof Integer) 
         { 
             int pid = ((Integer) vmid).intValue(); 
             String name = vmid.toString(); // default to pid if name not available 
             boolean attachable = false; 
             String address = null; 
             try 
             { 
                 MonitoredVm mvm = host.getMonitoredVm(new VmIdentifier(name)); 
                 // use the command line as the display name 
                 name = MonitoredVmUtil.commandLine(mvm); 
                 attachable = MonitoredVmUtil.isAttachable(mvm); 
                 address = ConnectorAddressLink.importFrom(pid); 
                 mvm.detach(); 
                 log("----------------name[%s] attachable[%s] address[%s]----------", name, attachable, address); 
                 showConnectionMbeans(address); 
             } 
             catch (Exception x) 
             { 
                 // ignore 
             } 
         } 
     } 
} 

//这个方法sun定义了规范 
public static void showAttachableVMs() 
{ 
     List<VirtualMachineDescriptor> vms = VirtualMachine.list(); 
     for (VirtualMachineDescriptor vmd : vms) 
     { 
         try 
         { 
             Integer vmid = Integer.valueOf(vmd.id()); 
             
                 boolean attachable = false; 
                 String address = null; 
                 try 
                 { 
                     VirtualMachine vm = VirtualMachine.attach(vmd); 
                     attachable = true; 
                     Properties agentProps = vm.getAgentProperties(); 
                     address = (String) agentProps.get("com.sun.management.jmxremote.localConnectorAddress"); 
                     vm.detach(); 
                     log("name[%s] attachable[%s] address[%s]", vmd.displayName(), attachable, address); 
                 } 
                 catch (AttachNotSupportedException x) 
                 { 
                     // not attachable 
                 } 
                 catch (IOException x) 
                 { 
                     // ignore 
                 } 
             
         } 
         catch (NumberFormatException e) 
         { 
             // do not support vmid different than pid 
         } 
     } 
}