How to find which library slf4j has bound itself to?
Just do what SLF4J does to discover the binding:
final StaticLoggerBinder binder = StaticLoggerBinder.getSingleton();
Now you can try to find out what is the actual implementation logback in my case:
System.out.println(binder.getLoggerFactory());
System.out.println(binder.getLoggerFactoryClassStr());
This prints:
ch.qos.logback.classic.LoggerContext[default]
ch.qos.logback.classic.selector.DefaultContextSelector
The StaticLoggerBinder's getLoggerFactoryClassStr() method is probably what you're looking for.