Question

Could anybody please tell me
what’s the relation between log4j and apache.commons.logging ? which one is more popular and better ?

I have imported an existing Application in which they have imported import org.apache.commons.logging.LogFactory; and written a separate class called Log and overridden some of the methods as critical, warn, info

For instance

 public static void info(String caller, String toWrite)
   {
      write(caller,toWrite,Log.INFO);
   }

Could anybody please tell me is log4j and apache.commons.logging are different ??

Answer 1

Apache Commons Logging is an abstraction for the concrete implementation. It uses log4j, if present and configured. I would use Commons logging in my code and log4j as logging implementation.