Property file: loaded from JAVA_HOME not from classpath
To route JUL to slf4j, use https://stackoverflow.com/questions/6020545/send-redirect-route-java-util-logging-logger-jul-to-logback-using-slf4j
Then add the following
SLF4JBridgeHandler.removeHandlersForRootLogger(); // (since SLF4J 1.6.5)
SLF4JBridgeHandler.install();
It only route the request, the filter JUL is still apply
Need to update manually
Logger l = Logger.getLogger(AppMambuV1.class.getName());
l.info("info");
l.fine("fine1");
l.setLevel(Level.FINER);
l.fine("fine2");
Then update log4j
log4j.logger.com.mambu=TRACE
JUL is routed to slf4j autoamtically, no need to add logging.property.
Just set in application.properties
logging.level.com.mambu=TRACE