Question 1

How to integrate PMD with Maven or Gradle?

Accepted Answer

PMD provides plugins for both Maven and Gradle; add the plugin to your build file and configure rulesets in the PMD section. Check the official documentation for detailed examples and setup instructions.

Question 2

Does PMD work with Kotlin code analysis?

Accepted Answer

Yes, PMD supports Kotlin for static analysis with built-in rules, but the rule coverage may be less comprehensive than for Java. Refer to the language-specific rulesets in the docs for details.

Question 3

PMD vs SonarQube: which is better for Java projects?

Accepted Answer

PMD is lighter and more extensible for custom rules, ideal for teams wanting fine-grained control. SonarQube offers broader metrics, security analysis, and a web UI, making it better for comprehensive platform needs.

Question 4

How to write custom PMD rules for JavaScript?

Accepted Answer

Use Java or XPath to define rules based on JavaScript AST nodes; create an XML ruleset file and reference it in PMD configuration. The PMD designer tool can help test and visualize XPath queries.

Question 5

What languages does PMD's copy-paste detector cover?

Accepted Answer

CPD supports over 30 languages including C++, Python, Ruby, and Go, making it useful for detecting duplicates in diverse projects. See the README for the full list and configuration options.

Question 6

Can PMD be used in CI/CD pipelines like GitHub Actions?

Accepted Answer

Yes, run PMD using the binary or Docker image in workflow steps; execute 'pmd check' to analyze code and report violations, integrating automated code quality checks into your CI process.

PMD

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