pmd/README.md

# PMD

[![Join the chat at https://gitter.im/pmd/pmd](https://badges.gitter.im/pmd/pmd.svg)](https://gitter.im/pmd/pmd?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
[![Build Status](https://github.com/pmd/pmd/workflows/Pushes/badge.svg?branch=master)](https://github.com/pmd/pmd/actions)
[![Maven Central](https://maven-badges.herokuapp.com/maven-central/net.sourceforge.pmd/pmd/badge.svg)](https://maven-badges.herokuapp.com/maven-central/net.sourceforge.pmd/pmd)
[![Reproducible Builds](https://img.shields.io/badge/Reproducible_Builds-ok-green?labelColor=blue)](https://github.com/jvm-repo-rebuild/reproducible-central#net.sourceforge.pmd:pmd)
[![Coverage Status](https://coveralls.io/repos/github/pmd/pmd/badge.svg)](https://coveralls.io/github/pmd/pmd)
[![Codacy Badge](https://api.codacy.com/project/badge/Grade/a674ee8642ed44c6ba7633626ee95967)](https://www.codacy.com/app/pmd/pmd?utm_source=github.com&utm_medium=referral&utm_content=pmd/pmd&utm_campaign=Badge_Grade)
[![Contributor Covenant](https://img.shields.io/badge/Contributor%20Covenant-v2.0%20adopted-ff69b4.svg)](code_of_conduct.md) 

## About

**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 and Visualforce,
Modelica, PLSQL, Apache Velocity, XML, XSL, Scala.

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.

## Support

*   How do I? -- Ask a question on [StackOverflow](https://stackoverflow.com/questions/tagged/pmd)
    or on [discussions](https://github.com/pmd/pmd/discussions).
*   I got this error, why? -- Ask a question on [StackOverflow](https://stackoverflow.com/questions/tagged/pmd)
    or on [discussions](https://github.com/pmd/pmd/discussions).
*   I got this error and I'm sure it's a bug -- file an [issue](https://github.com/pmd/pmd/issues).
*   I have an idea/request/question -- create a new [discussion](https://github.com/pmd/pmd/discussions).
*   I have a quick question -- ask on our [Gitter chat](https://gitter.im/pmd/pmd).
*   Where's your documentation? -- <https://pmd.github.io/latest/>

## Source

Our latest source of PMD can be found on [GitHub](https://github.com/pmd/pmd). 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](https://github.com/pmd/pmd-designer).
Please see [its README](https://github.com/pmd/pmd-designer#contributing) for
developer documentation.

## Website

More information can be found on our [Website](https://pmd.github.io).