<!DOCTYPE log4j:configuration SYSTEM "log4j.dtd">
<log4j:configuration xmlns:log4j="http://jakarta.apache.org/log4j/">
   <appender name="Appender1" class="org.apache.log4j.FileAppender">
      <param name="File" value="alice.log" />
      <layout class="org.apache.log4j.PatternLayout">
         <param name="ConversionPattern" value="%d %-5p %c - %m [%t] (%F:%L)%n"/>
      </layout>
   </appender>
   <root>
      <level value="warn" />
      <appender-ref ref="Appender1" />
   </root>
</log4j:configuration>