jetty-build-support/src/main/resources/jetty/pmd_logging_ruleset.xml

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<ruleset name="Custom PMD Ruleset"
   xmlns="http://pmd.sf.net/ruleset/1.0.0"
   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
   xsi:noNamespaceSchemaLocation="http://pmd.sf.net/ruleset_xml_schema.xsd"
   xsi:schemaLocation="http://pmd.sf.net/ruleset/1.0.0 http://pmd.sf.net/ruleset_xml_schema.xsd">
   <description>PMD Logging Rule Set for Jetty</description>

   <!-- CUSTOM RULES -->
   <rule name="AvoidAnonymousLogging"
         since="1.0"
         message="Use named logging, not anonymous"
         class="net.sourceforge.pmd.rules.XPathRule">
      <description>
AvoidAnonymousLogging finds instances of Anonymous logging use.
This is bad form and treats logging of the system as a whole, not
discrete parts that can be adjusted (attaching different levels and
appenders depending on need)
      </description>
      <priority>3</priority>
      <properties>
          <property name="xpath">
              <value>
    <![CDATA[
//Name[
 starts-with(@Image, 'Log.debug')
 or
 starts-with(@Image, 'Log.ignore')
 or
 starts-with(@Image, 'Log.info')
 or
 starts-with(@Image, 'Log.isDebugEnabled')
 or
 starts-with(@Image, 'Log.warn')
 or
 starts-with(@Image, 'org.eclipse.jetty.util.log.Log.debug')
 or
 starts-with(@Image, 'org.eclipse.jetty.util.log.Log.ignore')
 or
 starts-with(@Image, 'org.eclipse.jetty.util.log.Log.info')
 or
 starts-with(@Image, 'org.eclipse.jetty.util.log.Log.isDebugEnabled')
 or
 starts-with(@Image, 'org.eclipse.jetty.util.log.Log.warn')
 ]
 ]]>
             </value>
          </property>
      </properties>
      <example>
  <![CDATA[
public void doSomething() {
  Log.debug("Something happened"); // Not good
}
 ]]>
      </example>
   </rule>

</ruleset>