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# PMD
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[](https://gitter.im/pmd/pmd?utm_source=badge& utm_medium=badge& utm_campaign=pr-badge& utm_content=badge)
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[](https://travis-ci.org/pmd/pmd)
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[](https://maven-badges.herokuapp.com/maven-central/net.sourceforge.pmd/pmd)
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[](https://coveralls.io/github/pmd/pmd)
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## About
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**PMD** is a source code analyzer. It finds common programming flaws like unused variables, empty catch blocks,
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unnecessary object creation, and so forth. It supports Java, JavaScript, Salesforce.com Apex and Visualforce, PLSQL, Apache Velocity,
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XML, XSL.
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Additionally it includes **CPD** , the copy-paste-detector. CPD finds duplicated code in
Java, C, C++, C#, Groovy, PHP, Ruby, Fortran, JavaScript, PLSQL, Apache Velocity, Scala, Objective C,
Salesforce.com Apex, Perl, Swift, Matlab, Python.
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## Source and Documentation
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Our latest source of PMD can be found on [GitHub ](https://github.com/pmd/pmd ). Fork us!
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* [How to build PMD ](BUILDING.md )
* [How to contribute to PMD ](CONTRIBUTING.md )
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## News and Website
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More information can be found on our [Website ](https://pmd.github.io ) and on [SourceForge ](https://sourceforge.net/projects/pmd/ ).
