| # Apache Tomcat 6.0 |

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# Apache Tomcat 6.0 ## MBean Descriptor How To | print-friendly version
Introduction
Tomcat 6 uses JMX MBeans as the technology for implementing manageability of Tomcat. The descriptions of JMX MBeans for Catalina are in the mbeans-descriptor.xml file in each package. You will need to add MBean descriptions for your custom components in order to avoid a "ManagedBean is not found" exception.
Adding MBean descriptions
> You may also add MBean descriptions for custom components in a mbeans-descriptor.xml file, located in the same package as the class files it describes.
>       <mbean         name="LDAPRealm"
>                 className="org.apache.catalina.mbeans.ClassNameMBean"
>               description="Custom LDAPRealm"
>                    domain="Catalina"
>                     group="Realm"
>                      type="com.myfirm.mypackage.LDAPRealm">

>         <attribute   name="className"
>               description="Fully qualified class name of the managed object"
>                      type="java.lang.String"
>                 writeable="false"/>

>         <attribute   name="debug"
>               description="The debugging detail level for this component"
>                      type="int"/>
>         .
>         .
>         .

>       </mbean>
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