Question

How to create performance counters that are exposed by jmx and accessed via jconsole?

Say whenever I instantiate a particular object, I increment a counter. I want to expose the counter value so I can view the value in jconsole.

How would I go about doing this?

Answer 1

There’s a few steps:

• Define an MBean interface that exposes your counter.
• Create an implementation of that interface
• Register the implementation with the platform MBean server using ManagementFactory.getPlatformMBeanServer().registerMBean(...)
• Access the MBean from jconsole

There are details in the JMX tutorial.