PMDis 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 withJava and Apex,butsupports 16 other languages.It comes with400+ 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 includesCPD,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.
Download the latest binary zip from thereleases and extract it somewhere.
Executebin/pmd checkorbin\pmd.bat check.
See alsoGetting Started
Demo:
This shows how PMD analysesopenjdk:
There are plugins for Maven and Gradle as well as for various IDEs. SeeTools / Integrations
- How do I? -- Ask a question onStackOverflow or ondiscussions.
- I got this error, why? -- Ask a question onStackOverflow or ondiscussions.
- I got this error and I'm sure it's a bug -- file anissue.
- I have an idea/request/question -- create a newdiscussion.
- I have a quick question -- ask in ourGitter room.
- Where's your documentation? --https://docs.pmd-code.org/latest/
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 onGitHub.Fork us!
The rule designer is developed over atpmd/pmd-designer. Please seeits READMEfor developer documentation.
Become a financial contributor and help us sustain our community.Contribute
This project follows theall-contributorsspecification. Contributions of any kind welcome!
Seecreditsfor the complete list.
