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PMD is an extensible multilanguage static code analyzer. It’s mainly concerned with Java.

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Files

PMD will run on files with the following extensions:
  • .java
  • .jsp
  • .kt (Kotlin)
  • .apex (Salesforce Apex)
  • pom.xml (Maven)

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Configuration

PMD uses an XML configuration file. PMD supports the following config files:
  • User-defined config file set at reviews.tools.pmd.config_file in your project’s .coderabbit.yaml file or setting the “Review → Tools → PMD → Config File” field in CodeRabbit’s settings page.
  • If no user-defined config file is found, we look for the following config file in the repo:
    • ruleset.xml
CodeRabbit will not run PMD if no config file is found.

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When we skip PMD

CodeRabbit will skip running PMD when:
  • No config file is found (user-defined config file or ruleset.xml).
  • PMD is already running in GitHub workflows.