# User documentation

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The following pages and posts are tagged with

Title | Type | Excerpt
--- | --- | ---
Ant Task Usage | Page | PMD Description Runs a set of static code analysis rules on some source code files and generates a list of problems found. Installation Before you can use the pmd task in your ant build.xml file, you need to install PMD and its libraries...
Best Practices | Page | Choose the rules that are right for you Running every existing rule will result in a huge number of rule violations, most of which will be unimportant. Having to sort through a thousand line report to find the few you’re really interested in takes all the fun out of...
Continuous Integrations plugins | Page | Introduction PMD can be integrate through some of the Continuous Integration tools that exist now. Here is a list of known (to us) plugin to do so. Hudson Plugin Hafner Ullrich has developed a PMD plugin for Hudson. Please check the plugin homepage for more info. <h2...
PMD CLI reference | Page | Full reference for PMD's command-line interface, including options, output formats and supported languages
Configuring rules | Page | Learn how to configure your rules directly from the ruleset XML.
Finding duplicated code with CPD | Page | Learn how to use CPD, the copy-paste detector shipped with PMD.
Report formats for CPD | Page | Overview of the built-in report formats for CPD
Defining rule properties | Page | Learn how to define your own properties both for Java and XPath rules.
The rule designer | Page | Learn about the usage and features of the rule designer.
Gradle | Page | The Gradle Build Tool provides a PMD Plugin that can be added to your build configuration. Technically it is based on the Ant Task. Example In your build.gradle add the following: plugins { id 'pmd' } Custom ruleset...
Incremental Analysis | Page | Explains how to use incremental analysis to speed up analysis
Installation and basic CLI usage | Page | Sums up the first steps to set up a CLI installation and get started using PMD
PMD Java API | Page | The easiest way to run PMD is to just use a build plugin in your favorite build tool like Apache Ant, Apache Maven or Gradle. There are also many integrations for IDEs available, see Tools. If you have your own build tool or want to integrate...
Making rulesets | Page | A ruleset is an XML configuration file, which describes a collection of rules to be executed in a PMD run. PMD includes built-in rulesets to run quick analys...
Maven PMD Plugin | Page | Maven 2 and 3 Running the pmd plugin Choosing the plugin version When adding the maven-pmd-plugin to your pom.xml, you need to select a version. To figure out the latest available version, have a look at the official maven-pmd-plugin documentation. As of March 2020, the current...
Using and defining code metrics for custom rules | Page | Since version 6.0.0, PMD is enhanced with the ability to compute code metrics on Java and Apex source (the so-called Metrics Framework). This framework provi...
Report formats for PMD | Page | Overview of the built-in report formats for PMD
Rule guidelines | Page | Rule Guidelines, or the last touches to a rule
Suppressing warnings | Page | Learn how to suppress some rule violations, from the source code using annotations or comments, or globally from the ruleset
Testing your rules | Page | Learn how to use PMD's simple test framework for unit testing rules.
Tools / Integrations | Page | ## Automated Code Review ### Codacy [Codacy](https://www.codacy.com/) automates code reviews and monitors code quality on every commit and pull request. It gives visibility into the technical debt and it can track code style and security issues, code coverage, code duplication, cyclomatic complexity and enforce best practices. Codacy is static analysis...
Writing a custom rule | Page | Learn how to write a custom rule for PMD
Writing a custom rule | Page | The information on this page has been split into several separate pages. Please update your bookmarks: * [Introduction to writing rules](pmd_userdocs_extending_writing_rules_intro.html) * [Your First Rule](pmd_userdocs_extending_your_first_rule.html) introduces the basic development process of a rule with a running example * [Writing XPath Rules](pmd_userdocs_extending_writing_xpath_rules.html) explains a bit more about XPath rules and our...
Introduction to writing PMD rules | Page | Writing your own PMD rules
Writing XPath rules | Page | This page describes XPath rule support in more details
Your first rule XPath | Page | Introduction to rule writing through an example.