Java/log4j

 <?xml version="1.0" encoding="UTF-8" ?>
 <!DOCTYPE log4j:configuration PUBLIC "-//APACHE//DTD LOG4J 1.2//EN" "log4j.dtd">
 <log4j:configuration xmlns:log4j='http://jakarta.apache.org/log4j/'>

   <appender name="STDOUT" class="org.apache.log4j.ConsoleAppender">
     <layout class="org.apache.log4j.PatternLayout">
       <param name="ConversionPattern"
        value="%d{HH:mm:ss,SSS} [%-15.15t][%-9.9X{thread}][%-14.14X{file}] (%-16.16c{1}:%3.3L) %-5p %m%n"/>
     </layout>
   </appender>

   <appender name="file" class="org.apache.log4j.DailyRollingFileAppender">
      <param name="File" value="logs/clean.log" />
      <param name="Append" value="true" />
      <param name="DatePattern" value="'.'yyyy-MM-dd" />
      <layout class="org.apache.log4j.PatternLayout">
         <param name="ConversionPattern"
          value="%d [%-15.15t][%-9.9X{thread}][%-14.14X{file}] (%-16.16c{1}:%3.3L) %-5p %m%n" />
      </layout>
   </appender>

   <category name="jp.co">
     <priority value="info" />
     <appender-ref ref="file" />
   </category>
   <root>
     <priority value ="debug" />
     <appender-ref ref="STDOUT" />
   </root>
 </log4j:configuration>