Editing Java Management Extensions (section)

===Types===
There are two basic types of MBean:
* ''Standard MBeans'' implement a business interface containing setters and getters for the attributes and the operations (i.e., methods).
* ''Dynamic MBeans'' implement the <code>javax.management.DynamicMBean</code> interface that provides a way to list the attributes and operations, and to get and set the attribute values.

Additional types are ''Open MBeans'', ''Model MBeans'' and ''Monitor MBeans''. ''Open MBeans'' are dynamic MBeans that rely on the basic data types. They are self-explanatory and more user-friendly. ''Model MBeans'' are dynamic MBeans that can be configured during runtime. A generic MBean class is also provided for dynamically configuring the resources during program runtime.

A MXBean (''Platform MBean'') is a special type of MBean that [[Reification (computer science)|reifies]] [[Java virtual machine]] subsystems such as [[garbage collection (computer science)|garbage collection]], [[JIT compilation]], [[memory pools]], [[Thread (computer science)|multi-threading]], etc.

A MLet (''Management applet'') is a utility MBean to load, instantiate and register MBeans in a MBeanServer from an [[XML]] description. The format of the XML descriptor is:<ref>
{{cite news 
| url= http://java.sun.com/j2se/1.5.0/docs/api/javax/management/loading/MLet.html 
| title= MLet (Java 2 Platform SE 5.0) | publisher= [[Sun Microsystems]] 
| access-date= 2008-06-22
}}
</ref>

<pre>
 <MLET CODE = ''class'' | OBJECT = ''serfile''
   ARCHIVE = ''archiveList''
   [CODEBASE = ''codebaseURL'']
   [NAME = ''objectName'']
   [VERSION = ''version'']
 >
   [arglist]
 </MLET>
</pre>