RootCategory and RootLogger

Hello,

we are making converter for log4j configuration (xml <-> properties)
[1]. It's school project but I hope it would be useful :)

My question is if there is difference between RootCategory and
RootLogger, or if we can just rename RootCategory to RootLogger.

Thanks

Honza Brázdil

[1]: https://github.com/janinko/Log4J-configuration-converter