Use different logger

[Michal Stehlik]

Hi,

I use log4j2 logger and wanted to redirect POI to this logger. Web says I
should implement class that would implement interface POILogger.
Unfortunatelly, POILogger is not interface - it is abstract class with
package private constructor, and thus cannot be subclassed without forking
POI project.

Is it possible to either add simple wrapper for using log4j2, or make
POILogger constructor public to enable its subclassing outside
org.apache.poi.util package?

Kind regards,
                Michal