update dynamically log level with Apache Log4J

.java

    public void changeLogLevel(String logLevel) {
        final Level formerLogLevel = LogManager.getRootLogger().getLevel();
        final Level newLogLevel = Level.toLevel(logLevel);
        LogManager.getRootLogger().setLevel(newLogLevel);

        final Enumeration currentLoggers = getLoggerRepository().getCurrentLoggers();
        while (currentLoggers.hasMoreElements()) {
            logger.setLevel(newLogLevel);
        }
        auditEventService.saveAuditEvent(LOG_LEVEL_UPDATE_OK, "Log level was changed from: " + formerLogLevel.toString() + " to: " + logLevel);
        log.fatal("after log level change, testing FATAL");
        log.error("after log level change, testing ERROR");
        log.warn("after log level change, testing WARN");
        log.info("after log level change, testing INFO");
        log.debug("after log level change, testing DEBUG");
        log.trace("after log level change, testing TRACE");
    }

Can you please share the full code?