Disable PMD analysis for benchmarking code.
diff --git a/commons-numbers-examples/examples-jmh/pom.xml b/commons-numbers-examples/examples-jmh/pom.xml
index 6d9ff4c..544c24f 100644
--- a/commons-numbers-examples/examples-jmh/pom.xml
+++ b/commons-numbers-examples/examples-jmh/pom.xml
@@ -82,6 +82,8 @@
     <jmh.version>1.22</jmh.version>
     <uberjar.name>examples-jmh</uberjar.name>
     <project.mainClass>org.openjdk.jmh.Main</project.mainClass>
+    <!-- Disable analysis for benchmarking code. -->
+    <pmd.skip>true</pmd.skip>
   </properties>
 
   <profiles>
diff --git a/pom.xml b/pom.xml
index 74eee73..55885c6 100644
--- a/pom.xml
+++ b/pom.xml
@@ -308,6 +308,9 @@
           <rulesets>
             <ruleset>${numbers.parent.dir}/src/main/resources/pmd/pmd-ruleset.xml</ruleset>
           </rulesets>
+          <excludeRoots>
+            <excludeRoot>target/generated-sources</excludeRoot>
+          </excludeRoots>
         </configuration>
       </plugin>
       <plugin>