<project>
...
        
	<reporting>
		<plugins>
			<plugin>
				<groupId>org.apache.maven.plugins</groupId>
				<artifactId>maven-pmd-plugin</artifactId>
				<version>3.23.0</version>
				<configuration>
					<rulesets>
						<ruleset>/rulesets/java/basic.xml</ruleset>
						<ruleset>/rulesets/java/unusedcode.xml</ruleset>
					</rulesets>
					<format>net.sourceforge.pmd.renderers.SummaryHTMLRenderer</format>
				</configuration>
			</plugin>
		</plugins>
	</reporting>
	<build>
		<plugins>
			....
			
			<plugin>
				<groupId>org.apache.maven.plugins</groupId>
				<artifactId>maven-pmd-plugin</artifactId>
				<version>3.23.0</version>
			</plugin>
		</plugins>
	</build>
</project>