How to find the JMX port in a server?

Question

If you know the process number you can use netstat to find what ports the program is listening on with something like

$ netstat -apn | grep <proc num>

The conventional port for JMX listeners is 1099.

I know it's an old post. You can also get the details from System:

String jmx1 = System.getProperty("com.sun.management.jmxremote");
String jmx2 = System.getProperty("com.sun.management.jmxremote.port");
String jmx3 = System.getProperty("com.sun.management.jmxremote.authenticate");
String jmx4 = System.getProperty("com.sun.management.jmxremote.ssl");
String jmx5 = System.getProperty("java.rmi.server.hostname");

You can also manually set the port from the JVM commandline settings, e.g:

-Dcom.sun.management.jmxremote=true
-Dcom.sun.management.jmxremote.port=1616
-Dcom.sun.management.jmxremote.authenticate=false
-Dcom.sun.management.jmxremote.ssl=false

You can programmatically access the JVM arguments like so:

import java.lang.management.ManagementFactory;
import java.lang.management.RuntimeMXBean;
...       
RuntimeMXBean RuntimemxBean = ManagementFactory.getRuntimeMXBean();
List<String> arguments = RuntimemxBean.getInputArguments();