How to install and use Java JMX?

9 months ago

Olivia Parker

2 minutes

Java Management Extensions (JMX) is a monitoring and management technology on the Java platform that helps developers monitor and manage Java applications. Here are the steps for installing and using JMX:

Install JMX:

Download JMX implementation libraries, such as JConsole or VisualVM.
Add the JAR file of the JMX implementation library to the application’s classpath.
To add a JMX agent in the application, you can do so by following these steps.

import java.lang.management.ManagementFactory;
import javax.management.MBeanServer;
import com.sun.jdmk.comm.HtmlAdaptorServer;

public class JMXAgent {
    public static void main(String[] args) throws Exception {
        MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();
        HtmlAdaptorServer adapter = new HtmlAdaptorServer();
        ObjectName adapterName = new ObjectName("MyAgent:name=htmladapter,port=8082");
        adapter.setPort(8082);
        mbs.registerMBean(adapter, adapterName);
        adapter.start();
    }
}

Utilize JMX:

Start the application and ensure that the JMX agent has been added to the application.
Run JConsole or VisualVM and connect to the JMX agent of the application.
In JConsole or VisualVM, you can view the performance data of the application, manage MBeans, and invoke operations on MBeans.

By following the steps above, you can install and utilize JMX to monitor and manage Java applications. Hope this helps you!