How to initialize log4j properly?

Question

After adding log4j to my application I get the following output every time I execute my application:

log4j:WARN No appenders could be found for logger (slideselec         


        

Answer 1

If you are having this error on Intellij IDEA even after adding the log4j.properties or log4j.xml file on your resources test folder, maybe the Intellij IDEA is not aware yet about the existence of the file.

So, after add the file, right click on the file and choose Recompile log4j.xml.