1. Findbugs

1.1. Install

Add this to your pom.xml

<project>
    <reporting>
        <plugins>
        <plugin>
            <groupId>org.codehaus.mojo</groupId>
            <artifactId>findbugs-maven-plugin</artifactId>
            <version>3.0.4-SNAPSHOT</version>
        </plugin>
        </plugins>
    </reporting>
</project>

1.2. Usage

mvn site