log4j vs. log4j xml config

log4j.xml:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE log4j:configuration SYSTEM "log4j.dtd">
<log4j:configuration debug="false" xmlns:log4j='http://jakarta.apache.org/log4j/'>

  <appender name="CONSOLE" class="org.apache.log4j.ConsoleAppender">
    <layout class="org.apache.log4j.PatternLayout">
      <param name="ConversionPattern" value="%d{yyyy-MM-dd HH:mm:ss.SSS} %-5p [%t] %C{2}#%M (%F:%L) - %m%n" />
    </layout>
  </appender>

  <appender name="FILE" class="org.apache.log4j.DailyRollingFileAppender">
    <param name="append" value="true" />
    <param name="encoding" value="UTF-8" />
    <param name="file" value="logs/myapp/myapp.log" />
    <param name="DatePattern" value="'.'yyyy-MM-dd" />
    <layout class="org.apache.log4j.PatternLayout">
      <param name="ConversionPattern" value="%d{yyyy-MM-dd HH:mm:ss.SSS} %-5p [%t] %C{2}#%M (%F:%L) - %m%n" />
    </layout>
  </appender>

  <logger name="_poligon" additivity="false">
    <level value="debug" />
    <appender-ref ref="CONSOLE" />
    <appender-ref ref="FILE" />
  </logger>

</log4j:configuration>

log4j2.xml:

<?xml version="1.0" encoding="UTF-8"?>
<Configuration monitorInterval="60">
 <Properties>
  <Property name="myapp.logs.dir">logs/myapp</Property>
  <Property name="myapp.pattern.layout">%d{yyyy-MM-dd HH:mm:ss.SSS} %-5p [%t] %C{2}#%M (%F:%L) - %m%n
  </Property>
  <Property name="myapp.file.timepattern">%d{yyyy-MM-dd}</Property>
  <Property name="myapp.file.name">myapp</Property>
 </Properties>

 <Appenders>
  <Console name="CONSOLE" target="SYSTEM_OUT">
   <PatternLayout pattern="${myapp.pattern.layout}" />
  </Console>

  <RollingFile name="FILE" fileName="${myapp.logs.dir}/${myapp.file.name}.log"
   filePattern="${myapp.logs.dir}/${myapp.file.name}-${myapp.file.timepattern}.log.gz">
   <PatternLayout pattern="${myapp.pattern.layout}" />
   <Policies>
    <TimeBasedTriggeringPolicy />
   </Policies>
  </RollingFile>
 </Appenders>

 <Loggers>
  <Logger name="myapp" level="debug" additivity="false">
   <AppenderRef ref="CONSOLE" />
   <AppenderRef ref="FILE" />
  </Logger>
 </Loggers>
</Configuration>