Description
PMD is a source code analyzer. It finds common programming flaws like unused variables, empty catch blocks, unnecessary object creation, and so forth. It supports Java, JavaScript, Salesforce.com Apex, XML, XSL. Additionally it includes CPD, the copy-paste-detector. CPD finds duplicated code in Java, C, C++, C#, PHP, Ruby, Fortran, JavaScript, Salesforce.com Apex, Perl, Swift.
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README
PMD - source code analyzer
[
](code_of_conduct.md)
PMD is a source code analyzer. It finds common programming flaws like unused variables, empty catch blocks, unnecessary object creation, and so forth. It supports many languages. 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.
It supports Java, JavaScript, Salesforce.com Apex and Visualforce, Modelica, PLSQL, Apache Velocity, XML, 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 C/C++, C#, Dart, Fortran, Go, Groovy, Java, JavaScript, JSP, Kotlin, Lua, Matlab, Modelica, Objective-C, Perl, PHP, PLSQL, Python, Ruby, Salesforce.com Apex, Scala, Swift, Visualforce and XML.
In the future we hope to add support for data/control flow analysis and automatic (quick) fixes where it makes sense.
🚀 Installation and Usage
Download the latest binary zip from the releases and extract it somewhere.
Execute bin/run.sh pmd or bin\pmd.bat.
See also Getting Started
Demo:
This shows how PMD can detect for loops, that can be replaced by for-each loops.
[Demo](docs/images/userdocs/pmd-demo.gif)
There are plugins for Maven and Gradle as well as for various IDEs. See Tools / Integrations
ℹ️ How to get support?
- How do I? -- Ask a question on StackOverflow or on discussions.
- I got this error, why? -- Ask a question on StackOverflow or on discussions.
- I got this error and I'm sure it's a bug -- file an issue.
- I have an idea/request/question -- create a new discussion.
- I have a quick question -- ask on our Gitter chat.
- Where's your documentation? -- https://pmd.github.io/latest/
🤝 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!
- [How to build PMD](BUILDING.md)
- [How to contribute to PMD](CONTRIBUTING.md)
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](docs/pages/pmd/projectdocs/credits.md) for the complete list.
📝 License
[BSD Style](LICENSE)
*Note that all licence references and agreements mentioned in the PMD README section above
are relevant to that project's source code only.