spotbugs former findbugs

https://spotbugs.readthedocs.io/en/latest/maven.html#goals-of-spotbugs-maven-plugin

<plugin>
 <groupId>com.github.spotbugs</groupId>
 <artifactId>spotbugs-maven-plugin</artifactId>
 <version>3.1.11</version>
 <dependencies>
  <!-- overwrite dependency on spotbugs if you want to specify the version 
   of spotbugs -->
  <dependency>
   <groupId>com.github.spotbugs</groupId>
   <artifactId>spotbugs</artifactId>
   <version>3.1.12</version>
  </dependency>
 </dependencies>
</plugin>

mvn spotbugs:spotbugs

this generates a file with a report:

target/spotbugsXml.xml

the report is hard to read honestly, but there are many interesting remarks