This week's giveaway is in the EJB and other Java EE Technologies forum. We're giving away four copies of EJB 3 in Action and have Debu Panda, Reza Rahman, Ryan Cuprak, and Michael Remijan on-line! See this thread for details.
You have to have either log4j.properties or log4j.xml which contains the configuration information for log4j to use. Please use an appropriate forum, this is not a general java question. Please read this.