After battling with several different configurations when it comes to logging and Tomcat 5.5.x, I decided to put together this guide for a simplistic approach. This assumes that you would like to use Log4J for both Tomcat’s internal logging as well as your deployed web application’s logging needs.

For the impatient, here are the steps:

1. Place a log4j.properties file which uses the RollingFileAppender in common/classes.
2. Add your log4j.jar to the common/lib directory.
3. Add commons-logging.jar (1.0.4 or later) and log4j.jar to your application’s WEB-INF/lib directory.
4. Add a log4j.properties OR log4j.xml file to your application’s WEB-INF/classes directory.

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The hits keep on coming with technology acquisitions lately. First Oracle snatches BEA and now this. This was a bit of a shocker considering MySQL was talking about an IPO. Then bam, Sun gobbles MySQL up and everyone has to think up some new acronymns: maybe LASP or LASJ instead of LAMP? This is another stake in the ground indicating Sun’s commitment to open source.