ClassCastException: org.slf4j.impl.Log4jLoggerAdapter cannot be cast to ch.qos.logback.classic.Logger

Question

I was following this answer in order to add a appender on runtime. Even though that works for the original poster, I get this exception in line Logger logger = (Logger

Answer 1

Due to an already existing dependency of SLF4J in your project or in some other inherited project, there might be conflicts during runtime. Adding an exclusion to my POM file worked for me:

        
            
                org.slf4j
                slf4j-log4j12