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PMD - source code analyzer

PMD Logo

Join the chat Build Status Maven Central Reproducible Builds Coverage Status Codacy Badge Contributor Covenant Documentation (latest)

PMD is an extensible multilanguage static code analyzer. It finds common programming flaws like unused variables, empty catch blocks, unnecessary object creation, and so forth. It's mainly concerned with Java and Apex, but supports 16 other languages. It comes with 400+ built-in rules. It can be extended with custom rules. It uses JavaCC and Antlr to parse source files into abstract syntax trees (AST) and runs rules against them to find violations. Rules can be written in Java or using a XPath query.

Currently, PMD supports Java, JavaScript, Salesforce.com Apex and Visualforce, Kotlin, Swift, Modelica, PLSQL, Apache Velocity, JSP, WSDL, Maven POM, HTML, XML and XSL. Scala is supported, but there are currently no Scala rules available.

Additionally, it includes CPD, the copy-paste-detector. CPD finds duplicated code in Coco, C/C++, C#, Dart, Fortran, Gherkin, Go, Groovy, HTML, Java, JavaScript, JSP, Julia, Kotlin, Lua, Matlab, Modelica, Objective-C, Perl, PHP, PLSQL, Python, Ruby, Salesforce.com Apex and Visualforce, Scala, Swift, T-SQL, Typescript, Apache Velocity, WSDL, XML and XSL.

🚀 Installation and Usage

Download the latest binary zip from the releases and extract it somewhere.

Execute bin/pmd check or bin\pmd.bat check.

See also Getting Started

Demo:

This shows how PMD analyses openjdk:

Demo

There are plugins for Maven and Gradle as well as for various IDEs. See Tools / Integrations

ℹ️ How to get support?

🤝 Contributing

Pull requests are welcome. For major changes, please open an issue first to discuss what you would like to change.

Our latest source of PMD can be found on GitHub. Fork us!

The rule designer is developed over at pmd/pmd-designer. Please see its README for developer documentation.

💵 Financial Contributors

Become a financial contributor and help us sustain our community. Contribute

✨ Contributors

This project follows the all-contributors specification. Contributions of any kind welcome!

See credits for the complete list.

📝 License

BSD Style

Packages

No packages published

Languages

  • Java 75.4%
  • Apex 9.9%
  • Kotlin 9.0%
  • ANTLR 2.8%
  • PLSQL 0.9%
  • XSLT 0.8%
  • Other 1.2%