ObjectName mbo = new ObjectName("log4j:hierarchy=default");
mbs.registerMBean(hdm, mbo);
// Add the root logger to the Hierarchy MBean
Logger rootLogger = Logger.getRootLogger();
hdm.addLoggerMBean(rootLogger.getName());
// Get each logger from the Log4J Repository and add it to
// the Hierarchy MBean created above.
LoggerRepository r = LogManager.getLoggerRepository();
Enumeration enumer = r.getCurrentLoggers();