How to get consumer count using JMX API in ActiveMQ

first, get a connection to a JMX server (assumes localhost, port 9010, no auth)

First you need to start activemq with jmx service. Add below jvm parameters to java opts-

-Dcom.sun.management.jmxremote.ssl=false -Dcom.sun.management.jmxremote.authenticate=false -Dcom.sun.management.jmxremote.port=9010 -Dcom.sun.management.jmxremote.rmi.port=9011 -Djava.rmi.server.hostname=localhost -Dcom.sun.management.jmxremote.local.only=false

JMXServiceURL url = new JMXServiceURL("service:jmx:rmi:///jndi/rmi://localhost:9010/jmxrmi");

      JMXConnector jmxc = JMXConnectorFactory.connect(url);

      MBeanServerConnection conn = jmxc.getMBeanServerConnection();

      ObjectName activeMQ = new ObjectName("org.apache.activemq:type=Broker,brokerName=localhost");

      BrokerViewMBean mbean = (BrokerViewMBean) MBeanServerInvocationHandler.newProxyInstance(conn,

          activeMQ, BrokerViewMBean.class, true);

      for (ObjectName name : mbean.getQueues()) {

        QueueViewMBean queueMbean = (QueueViewMBean) MBeanServerInvocationHandler

            .newProxyInstance(conn, name, QueueViewMBean.class, true);

        String queueName = queueMbean.getName();

long count = queueMbean.getConsumerCount()

            }

queue monitoring - getEnqueueCount(), getDequeueCount(), getConsumerCount(), etc...