How to initialize log4j properly?

Posted by Janusz on Stack Overflow See other posts from Stack Overflow or by Janusz
Published on 2009-07-16T21:17:29Z Indexed on 2010/05/04 8:28 UTC
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log4j

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basics

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configuration

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 (slideselector.facedata.FaceDataParser).
log4j:WARN Please initialize the log4j system properly.

It seems this means a configuration file is missing. Where should this config file be located and what is a good start content?

I'm using plain java for developing a desktop application. So no webserver etc...

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