Maven PMD Plugin

mvn-pmd.xml

<plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-pmd-plugin</artifactId>
                <version>2.4</version>

                <configuration>
                    <!-- your example configuration here -->
                    <rulesets>
                        <ruleset>rulesets/java/coupling.xml</ruleset>
                        <ruleset>rulesets/java/design.xml</ruleset>
                        <ruleset>rulesets/java/controversial.xml</ruleset>
                        <ruleset>rulesets/java/codesize.xml</ruleset>
                        <ruleset>rulesets/java/clone.xml</ruleset>
                        <ruleset>rulesets/java/braces.xml</ruleset>
                        <ruleset>rulesets/java/basic.xml</ruleset>
                        <ruleset>rulesets/java/finalizers.xml</ruleset>
                        <ruleset>rulesets/java/imports.xml</ruleset>
                        <ruleset>rulesets/java/logging-jakarta-commons.xml</ruleset>
                        <ruleset>rulesets/java/logging-java.xml</ruleset>
                        <ruleset>rulesets/java/migrating.xml</ruleset>
                        <ruleset>rulesets/java/optimizations.xml</ruleset>
                        <ruleset>rulesets/java/strictexception.xml</ruleset>
                        <ruleset>rulesets/java/strings.xml</ruleset>
                        <ruleset>rulesets/java/sunsecure.xml</ruleset>
                        <ruleset>rulesets/java/typeresolution.xml</ruleset>
                        <ruleset>rulesets/java/unusedcode.xml</ruleset>
                    </rulesets>

                    <linkXref>true</linkXref>
                    <sourceEncoding>utf-8</sourceEncoding>
                    <targetJdk>1.7</targetJdk>
                    <verbose>true</verbose>
                </configuration>
            </plugin>

The files rulesets/java/...xml are not required to have here in my project? They are actual rule-sets from server?