PMD (software)

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PMD

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Basic data

Maintainer Andreas Dangel, Juan Martín Sotuyo Dodero, Clément Fournier
Current  version 6.20.0
( November 29, 2019 )
operating system platform independent
programming language Java
category Programming tool
License BSD style
pmd.github.io

PMD is a programming tool for the static code analysis of source texts . In addition to Java , JavaScript , XML and XSL as well as dialects derived from them are supported. The name PMD itself has officially no written meaning.

Bug fixes

The bugs PMD finds are typically not real bugs but rather inefficient code; H. the software will usually still run correctly if the errors are not corrected. Based on static rules, PMD finds potential problems such as:

  • Possible bugs - empty try/catch/finally/switchblocks.
  • Dead Code - Unused Local Variables , Parameters, and Private Methods
  • Empty if/whileexpressions
  • Overcomplicated expressions - unnecessary ifexpressions, or loops that could be used foras loops insteadwhile
  • Sub-optimal code - wasteful use ofString/StringBuffer
  • Classes with high cyclomatic complexity .

PMD offers a multitude of built-in rules and the possibility to extend existing rules or to write your own rules.

Extensions and plug-ins

PMD provides plug-ins for development environments such as JDeveloper , Eclipse , JBuilder , NetBeans , JCreator and IntelliJ IDEA as well as editors such as JEdit , Emacs and TextPad . In addition, there are extensions for build tools such as Apache Maven and Apache Ant , continuous integration servers such as Jenkins and Hudson and the static code analysis platform SonarQube .

The Copy-Paste-Detector (CPD) is an extension of PMD that uses the Rabin-Karp algorithm to find duplicated code. CPD can be applied to Java, C, C ++, C #, PHP, Ruby, Fortran, as well as JavaScript. The tool can also be run independently of PMD using the Java Web Start technology.

Alternatives

In the Java environment, in addition to PMD, Checkstyle and FindBugs are usually used for static code analysis. With FxCop, Microsoft provides a comparable tool for the .NET platform. See also List of Tools for Static Code Analysis .

Individual evidence

  1. ↑ Release 6.20.0 . November 29, 2019 (accessed November 30, 2019).
  2. ↑ PMD Rulesets index. pmd.sourceforge.net, accessed May 5, 2013 .
  3. ↑ What does 'PMD' mean? pmd.github.io, accessed on April 28, 2018 .
  4. ↑ Integrations with IDEs. pmd.sourceforge.net, accessed May 5, 2013 .
  5. ↑ Finding copied and pasted code. pmd.sourceforge.net, accessed May 5, 2013 .
  6. ↑ CPD (Java WebStart). pmd.sourceforge.net, accessed May 5, 2013 .

Web links