How to connect to a java program on localhost jvm using JMX?

Question

I should connect to a java program on localhost jvm using JMX. In other words I want to develop a JMX client to config a java program on localhost.

• Don\'t r

Answer 1

Simplest means:

import javax.management.Attribute;
import javax.management.AttributeList;
import java.lang.management.ManagementFactory;
import javax.management.MBeanServer;
import javax.management.ObjectName;

// set a self JMX connection
MBeanServer mBeanServer = ManagementFactory.getPlatformMBeanServer();
// set the object name(s) you are willing to query, here a CAMEL JMX object
ObjectName objn = new ObjectName("org.apache.camel:context=*,type=routes,name=\"route*\"");
Set objectInstanceNames = mBeanServer.queryNames(objn, null);
for (ObjectName on : objectInstanceNames) {
    // query a number of attributes at once
    AttributeList attrs = mBeanServer.getAttributes(on, new String[] {"ExchangesCompleted","ExchangesFailed"});
    // process attribute values (beware of nulls...)
    // ... attrs.get(0) ... attrs.get(1) ...
}