Java Reference
In-Depth Information
Figure 10.2
JMX agent creating MBeans by loading an M-let file
The contents of an M-let file closely resemble XML. If you have XML experi-
ence, you will recognize the content structure; if you don't, it will still be easy
to understand.
The following is a simple entry from an M-let file. It does not contain all the
possible attributes, but it shows the MLET tag used to encapsulate an entire entry
in an M-let file:
<MLET CODE=jmxbook.ch2.HelloWorld ARCHIVE=test.jar
NAME=hello:type=HelloWorld>
</MLET>
This MLET entry tells the agent to load the test.jar file, look for the jmxbook.
ch2.HelloWorld class, and create and register a HelloWorld MBean with an object
name of hello:type=HelloWorld .
As you can see, the MLET tag contains attributes that specify a classname, a
location for the class, and an object name for a new MBean to be created. Every
M-let file can contain any number of MLET entries. Before going any further, let's
examine each MLET tag attribute in the following sections.
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