# 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://travis-ci.org/pmd/pmd.svg?branch=master)](https://travis-ci.org/pmd/pmd) [![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) [![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 and Visualforce. ## Support * How do I? -- Ask a question on [StackOverflow](https://stackoverflow.com/questions/tagged/pmd). * I got this error, why? -- Ask a question on [StackOverflow](https://stackoverflow.com/questions/tagged/pmd). * 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 -- file an [issue](https://github.com/pmd/pmd/issues). * I have a quick question -- ask on our [Gitter chat](https://gitter.im/pmd/pmd). * Where's your documentation? -- ## 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).