To connect to a non-SSL JVM over TCP and retrieve values from JMX managed beans. Other authentication methods can be seen at Luis-Miguel Alventosa's blog: https://blogs.oracle.com/lmalventosa/entry/jmx_authentication_authorization

RemoteJMXValue.java

JMXServiceURL serviceUrl = new JMXServiceURL("service:jmx:rmi:///jndi/rmi://"+ipAddress+":"+port+"/jmxrmi");
String[] credentials = { userName, password };

Map<String, Object> env = new HashMap<String, Object>();
env.put(JMXConnector.CREDENTIALS, credentials);

JMXConnector connector = JMXConnectorFactory.connect(serviceUrl, env);
MBeanServerConnection connection = connector.getMBeanServerConnection();

ObjectName managedObject = new ObjectName(domainName, "name", objectName);
Object objectValue = connection.getAttribute(managedObject, attributeName);