Here we can add notes to enhance and document our learning process.
JaCoCo = How much of the code is tested - we only need to add the plugin in pom.xml and run 'mvn test'
PIT = How well our tests actually work - we need to add PIT plugin as a targetclass, run 'mvn pitest:mutationCoverage' , open PIT reports and doubleclick the index.html to see the report in the web browser.
SonarQube ties it all together and provides us with the bigger-quality view. It requires a little more configuration, but I believe it is absolutely manageable. Especially since we are 2 on this issue.