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<!DOCTYPE html>
<!--
| Generated by Apache Maven Doxia Site Renderer 1.11.1 from src/xdocs/index.xml.vm at 2024-10-31
| Rendered using Apache Maven Default Skin
-->
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<meta name="generator" content="Apache Maven Doxia Site Renderer 1.11.1" />
<title>checkstyle – Checkstyle 10.20.0</title>
<link rel="stylesheet" href="./css/maven-base.css" />
<link rel="stylesheet" href="./css/maven-theme.css" />
<link rel="stylesheet" href="./css/site.css" />
<link rel="stylesheet" href="./css/print.css" media="print" />
<script type="text/javascript" src="./js/checkstyle.js"></script>
<script type="text/javascript"
src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script>
<script type="text/javascript" src="./js/anchors.js"></script>
<script type="text/javascript" src="./js/google-analytics.js"></script>
<link rel="icon" href="./images/favicon.png" type="image/x-icon" />
<link rel="shortcut icon" href="./images/favicon.ico" type="image/ico" />
</head>
<body class="composite">
<div id="banner">
<a href="./" id="bannerLeft" title="Checkstyle"><img src="images/header-checkstyle-logo.png" alt="Checkstyle"/></a><a href="./" id="bannerRight" title="Checkstyle"><img src="images/header-right-ruller.png" alt="Checkstyle"/></a> <div class="clear">
<hr/>
</div>
</div>
<div id="breadcrumbs">
<div class="xright"><a href="" title="toTop">toTop</a> | <span id="publishDate">Last Published: 2024-10-31</span>
| <span id="projectVersion">Version: 10.20.0</span>
</div>
<div class="clear">
<hr/>
</div>
</div>
<div id="leftColumn">
<div id="navcolumn">
<h5>About</h5>
<ul>
<li class="none"><strong>Checkstyle</strong></li>
<li class="none"><a href="releasenotes.html" title="Release Notes">Release Notes</a></li>
<li class="none"><a href="consulting.html" title="Consulting">Consulting</a></li>
<li class="none"><a href="sponsoring.html" title="Sponsoring">Sponsoring</a></li>
</ul>
<h5>Documentation</h5>
<ul>
<li class="expanded"><a href="config.html" title="Configuration">Configuration</a>
<ul>
<li class="none"><a href="property_types.html" title="Property Types">Property Types</a></li>
<li class="none"><a href="config_system_properties.html" title="System Properties">System Properties</a></li>
</ul></li>
<li class="expanded"><a href="running.html" title="Running">Running</a>
<ul>
<li class="none"><a href="anttask.html" title="Ant Task">Ant Task</a></li>
<li class="none"><a href="cmdline.html" title="Command Line">Command Line</a></li>
</ul></li>
<li class="expanded"><a href="checks.html" title="Checks">Checks</a>
<ul>
<li class="collapsed"><a href="checks/annotation/index.html" title="Annotations">Annotations</a></li>
<li class="collapsed"><a href="checks/blocks/index.html" title="Block Checks">Block Checks</a></li>
<li class="collapsed"><a href="checks/design/index.html" title="Class Design">Class Design</a></li>
<li class="collapsed"><a href="checks/coding/index.html" title="Coding">Coding</a></li>
<li class="collapsed"><a href="checks/header/index.html" title="Headers">Headers</a></li>
<li class="collapsed"><a href="checks/imports/index.html" title="Imports">Imports</a></li>
<li class="collapsed"><a href="checks/javadoc/index.html" title="Javadoc Comments">Javadoc Comments</a></li>
<li class="collapsed"><a href="checks/metrics/index.html" title="Metrics">Metrics</a></li>
<li class="collapsed"><a href="checks/misc/index.html" title="Miscellaneous">Miscellaneous</a></li>
<li class="collapsed"><a href="checks/modifier/index.html" title="Modifiers">Modifiers</a></li>
<li class="collapsed"><a href="checks/naming/index.html" title="Naming Conventions">Naming Conventions</a></li>
<li class="collapsed"><a href="checks/regexp/index.html" title="Regexp">Regexp</a></li>
<li class="collapsed"><a href="checks/sizes/index.html" title="Size Violations">Size Violations</a></li>
<li class="collapsed"><a href="checks/whitespace/index.html" title="Whitespace">Whitespace</a></li>
</ul></li>
<li class="collapsed"><a href="filters/index.html" title="Filters">Filters</a></li>
<li class="collapsed"><a href="filefilters/index.html" title="File Filters">File Filters</a></li>
<li class="expanded"><a href="style_configs.html" title="Style Configurations">Style Configurations</a>
<ul>
<li class="none"><a href="google_style.html" title="Google's Style">Google's Style</a></li>
<li class="none"><a href="sun_style.html" title="Sun's Style">Sun's Style</a></li>
</ul></li>
</ul>
<h5>Developers</h5>
<ul>
<li class="expanded"><a href="extending.html" title="Extending Checkstyle">Extending Checkstyle</a>
<ul>
<li class="none"><a href="writingchecks.html" title="Writing Checks">Writing Checks</a></li>
<li class="none"><a href="writingjavadocchecks.html" title="Writing Javadoc Checks">Writing Javadoc Checks</a></li>
<li class="none"><a href="writingfilters.html" title="Writing Filters">Writing Filters</a></li>
<li class="none"><a href="writingfilefilters.html" title="Writing File Filters">Writing File Filters</a></li>
<li class="none"><a href="writinglisteners.html" title="Writing Listeners">Writing Listeners</a></li>
</ul></li>
<li class="none"><a href="contributing.html" title="Contributing">Contributing</a></li>
<li class="expanded"><a href="beginning_development.html" title="Beginning Development">Beginning Development</a>
<ul>
<li class="none"><a href="eclipse.html" title="Eclipse IDE">Eclipse IDE</a></li>
<li class="none"><a href="netbeans.html" title="NetBeans IDE">NetBeans IDE</a></li>
<li class="none"><a href="idea.html" title="IntelliJ IDE">IntelliJ IDE</a></li>
</ul></li>
<li class="none"><a href="apidocs/index.html" title="Javadoc">Javadoc</a></li>
</ul>
<h5>Project Documentation</h5>
<ul>
<li class="expanded"><a href="project-info.html" title="Project Information">Project Information</a>
<ul>
<li class="none"><a href="ci-management.html" title="CI Management">CI Management</a></li>
<li class="none"><a href="dependencies.html" title="Dependencies">Dependencies</a></li>
<li class="none"><a href="dependency-info.html" title="Maven Coordinates">Maven Coordinates</a></li>
<li class="none"><a href="distribution-management.html" title="Distribution Management">Distribution Management</a></li>
<li class="none"><strong>About</strong></li>
<li class="none"><a href="issue-management.html" title="Issue Management">Issue Management</a></li>
<li class="none"><a href="licenses.html" title="Licenses">Licenses</a></li>
<li class="none"><a href="mailing-lists.html" title="Mailing Lists">Mailing Lists</a></li>
<li class="none"><a href="plugin-management.html" title="Plugin Management">Plugin Management</a></li>
<li class="none"><a href="plugins.html" title="Plugins">Plugins</a></li>
<li class="none"><a href="scm.html" title="Source Code Management">Source Code Management</a></li>
<li class="none"><a href="summary.html" title="Summary">Summary</a></li>
<li class="none"><a href="team.html" title="Team">Team</a></li>
</ul></li>
<li class="collapsed"><a href="project-reports.html" title="Project Reports">Project Reports</a></li>
</ul>
<a href="https://github.com/checkstyle/checkstyle" title="GitHub" class="poweredBy">
<img class="poweredBy" alt="GitHub" src="images/github_logo_social_coding_outlined.png" />
</a>
<a href="https://twitter.com/checkstyle_java/" title="Twitter" class="poweredBy">
<img class="poweredBy" alt="Twitter" src="images/twitter_button.png" />
</a>
<a href="https://stackoverflow.com/questions/tagged/checkstyle" title="Stackoverflow" class="poweredBy">
<img class="poweredBy" alt="Stackoverflow" src="images/stackoverflow.jpeg" />
</a>
<a href="https://groups.google.com/forum/#!forum/checkstyle" title="GoogleGroups" class="poweredBy">
<img class="poweredBy" alt="GoogleGroups" src="images/groups.png" />
</a>
<a href="https://www.ej-technologies.com/products/jprofiler/overview.html" title="JProfiler" class="poweredBy">
<img class="poweredBy" alt="JProfiler" src="https://www.ej-technologies.com/images/product_banners/jprofiler_medium.png" />
</a>
</div>
</div>
<div id="bodyColumn">
<div id="contentBox">
<section>
<h2><a name="Overview"></a>Overview</h2>
<p>
Checkstyle is a development tool to help programmers write Java code
that adheres to a coding standard. It automates the process of
checking Java code to spare humans of this boring (but important)
task. This makes it ideal for projects that want to enforce a coding
standard.
</p>
<p>
Checkstyle is highly configurable and can be made to support almost
any coding standard. An example configuration files are supplied
supporting the
<a href="styleguides/sun-code-conventions-19990420/CodeConvTOC.doc.html">
Sun Code Conventions</a>,
<a href="styleguides/google-java-style-20220203/javaguide.html">
Google Java Style</a>.
</p>
<p>
A good example of a report that can be produced using Checkstyle and
<a class="externalLink" href="https://maven.apache.org/">Maven</a> can be <a class="externalLink" href="https://maven.apache.org/plugins/maven-checkstyle-plugin/checkstyle.html">seen here</a>
.
</p>
</section>
<section>
<h2><a name="Features"></a>Features</h2>
<p>
Checkstyle can check many aspects of your source code.
It can find class design problems, method design problems.
It also has the ability to check code layout and formatting issues.
</p>
<p>
For a detailed list of available checks please refer to the <a href="checks.html">Checks</a> page.
</p>
</section>
<section>
<h2><a name="Download"></a>Download</h2>
<p>
The latest release of Checkstyle can be downloaded from <a class="externalLink" href="https://github.com/checkstyle/checkstyle/releases/">the
GitHub releases page</a>, or
<a class="externalLink" href="http://search.maven.org/#search|gav|1|g%3A%22com.puppycrawl.tools%22%20AND%20a%3A%22checkstyle%22">
Maven central</a>.
</p>
<p>
If you want to live on the bleeding edge, you can <a class="externalLink" href="https://github.com/checkstyle/checkstyle">checkout</a>
the current development code from GitHub and compile
yourself. Or use <a class="externalLink" href="https://jitpack.io/">jitpack.io</a> to build
and get artifacts you need (you can even build your forked repo).
</p>
</section>
<section>
<h2><a name="Previous_Version_Documentation"></a>Previous Version Documentation</h2>
<p>
The current website contains the documentation for the latest release only.
We only support this latest version.
<br />
You can find documentation for most old versions using a URL format like
https://checkstyle.sourceforge.io/version/X.X where "X.X" is the version number.<br />
Example:
<a class="externalLink" href="https://checkstyle.sourceforge.io/version/6.18/">
https://checkstyle.sourceforge.io/version/6.18
</a>
for version 6.18.
</p>
</section>
<section>
<h2><a name="Development_Cycle"></a>Development Cycle</h2>
<b>Release:</b><br />
<ul>
<li>happens at the end of each month if functional changes exist in the
<a class="externalLink" href="https://github.com/checkstyle/checkstyle/commits/master">
master branch of our repo</a>
</li>
<li>can happen by request by any user who is impacted,
but it is not always guaranteed.</li>
</ul>
<p>
Checkstyle is following its own view of
Hybrid Romantic and Semantic Versioning: This is in the form of
"<b>First</b>.<b>Second</b>.<b>Third</b>"
</p>
<p>
<b>First</b> digit is representing Romantic version.
When it is the only number increasing, the maintainers marked it as
a noticeably large breaking compatibility
or major conceptual change which occurred from their perspective.<br />
<b>Second</b> digit is Semantic version which is a combination of major and minor.
When it is the only number increasing, it means that
either some breaking compatibility happened
or new features/modules were introduced.<br />
<b>Third</b> digit is Semantic version which is the patch version.
When it is the only number increasing, it means that only defects are fixed.
</p>
<p>
Checkstyle is not using <a class="externalLink" href="https://semver.org/">Semantic Versioning</a>
due to the reason explained at
<a class="externalLink" href="https://github.com/checkstyle/checkstyle/issues/3709">issue #3709</a>.
</p>
</section>
<section>
<h2><a name="JRE_and_JDK"></a>JRE and JDK</h2>
<p>
Runtime of Checkstyle is limited only by minimal version or JRE.
</p>
<div class="wrapper">
<table border="0" class="bodyTable">
<tr class="a">
<th>Checkstyle version</th>
<th>JRE version</th>
</tr>
<tr class="b">
<td align="left">
10.x
</td>
<td>
11 and above
</td>
</tr>
<tr class="a">
<td align="left">
7.x, 8.x, 9.x
</td>
<td>
8 and above
</td>
</tr>
<tr class="b">
<td align="left">
6.x
</td>
<td>
6 and above
</td>
</tr>
<tr class="a">
<td align="left">
5.x
</td>
<td>
5 and above
</td>
</tr>
</table>
</div>
<p>
Checkstyle currently is confirmed to be buildable by all JDKs from 11 through 17.
Most recent JDKs may be supported. Please
<a class="externalLink" href="https://checkstyle.org/report_issue.html">report an issue</a>
if there are any problems with recent JDKs.
</p>
</section>
<section>
<h2><a name="Backport"></a>Backport</h2>
<p>
Since Checkstyle 7, some users have been unable to continue upgrading to newer versions
of the utility because of the new JDK compile requirements. The development team doesn't
have the resources to keep updating the utility for older JDKs for those that can't
work with the latest version.
</p>
<p>
However, some members of the community have created an unofficial backport of the latest
Checkstyle releases to be run with older JDKs. It is not always an easy process and provided
at the same release time as Checkstyle, but it tries to maintain a functional equivalent
alternative.
</p>
<div class="wrapper">
<table border="0" class="bodyTable">
<tr class="a">
<th>Backport version</th>
<th>Min. JRE version</th>
<th>Link</th>
</tr>
<tr class="b">
<td align="left">
10.0+
</td>
<td>
8
</td>
<td>
<a class="externalLink" href="https://github.com/rnveach/checkstyle-backport-jre8">github site</a>
</td>
</tr>
<tr class="a">
<td align="left">
7.0 - 8.45
</td>
<td>
6
</td>
<td>
<a class="externalLink" href="https://github.com/rnveach/checkstyle-backport-jre6">github site</a>
</td>
</tr>
</table>
</div>
</section>
<section>
<h2><a name="Supported_Java_Language_Version"></a>Supported Java Language Version</h2>
<p>
Checkstyle can parse all Java language features introduced
in <a class="externalLink" href="https://docs.oracle.com/javase/specs/jls/se22/html/index.html">Java 22</a>
and below. We may support preview features depending on community demand,
but please note that support for a given preview feature may change at any time.
</p>
<p>
Please <a href="report_issue.html">report an issue</a> if you
encounter any issues with the support of the latest Java language features.
</p>
</section>
<section>
<h2><a name="Limitations"></a>Limitations</h2>
<p>
Checkstyle is a single file static analysis tool, for more details please read
the full list of <a href="writingchecks.html#Limitations">limitations</a>.
</p>
</section>
<section>
<h2><a name="Additional_Checks"></a>Additional Checks</h2>
<p>
There are other projects that provide additional checks:
</p>
<div class="wrapper">
<table border="0" class="bodyTable">
<tr class="a">
<th>Project name</th>
<th>Link</th>
<th>Remarks</th>
</tr>
<tr class="b">
<td align="left">
<a class="externalLink" href="https://checkstyle-addons.thomasjensen.com/">Checkstyle addons</a>
</td>
<td>
<a class="externalLink" href="https://github.com/checkstyle-addons/checkstyle-addons/releases/latest">
checkstyle-addons
</a>
</td>
<td></td>
</tr>
<tr class="a">
<td align="left">
<a class="externalLink" href="https://sevntu-checkstyle.github.io/sevntu.checkstyle/">SevNTU checkstyle</a>
</td>
<td>
<a class="externalLink" href="https://github.com/sevntu-checkstyle/sevntu.checkstyle/releases">
sevntu-checkstyle
</a>
</td>
<td></td>
</tr>
</table>
</div>
</section>
<section>
<h2><a name="Related_Tools"></a>Related Tools</h2>
<p>
Checkstyle is most useful if you integrate it into your build process or
your development environment. The distribution includes:
</p>
<ul>
<li>An <a href="anttask.html">Ant task</a>.</li>
<li>A <a href="cmdline.html">command line</a> interface (CLI).</li>
</ul>
<p>
Additionally plug-ins are written by third-parties. Some of them are
still based on the Checkstyle 2.4 release, although there have been
many improvements since then. The known plug-ins are:
</p>
<a name="Related_Tools_Active_Tools"></a><section id="Related_Tools_Active_Tools">
<h3><a name="Active_Tools"></a>Active Tools</h3>
<div class="wrapper">
<table border="0" class="bodyTable">
<tr class="a">
<th>IDE / Build tool</th>
<th>Main/Initial Author</th>
<th>Available from</th>
<th>Remarks</th>
</tr>
<tr class="b">
<td align="left">
<a class="externalLink" href="https://www.codacy.com/">Codacy</a>
</td>
<td>João Machado</td>
<td>
<a class="externalLink" href="https://github.com/codacy/codacy-checkstyle/">
codacy-checkstyle
</a>
</td>
<td>
Provides analysis per commit and per pull request. Supports CheckStyle
config files.
</td>
</tr>
<tr class="a">
<td align="left"><a class="externalLink" href="https://www.eclipse.org/">Eclipse/RAD/RDz</a></td>
<td>Christian Wulf</td>
<td>
<a class="externalLink" href="https://github.com/ChristianWulf/qa-eclipse-plugin">
Lightweight Eclipse Plugin for Quality Assurance Tools
</a>
</td>
<td>Alternative to the Eclipse-CS plugin.
Allows to use custom checks directly without providing
an Eclipse Fragment plugin for that purpose.
</td>
</tr>
<tr class="b">
<td align="left"><a class="externalLink" href="https://www.eclipse.org/">Eclipse/RAD/RDz</a></td>
<td>David Schneider</td>
<td>
<a class="externalLink" href="https://checkstyle.org/eclipse-cs/#!/">Eclipse-CS Home Page</a>
</td>
<td>
In 2007 was awarded
<a class="externalLink" href="https://www.eclipse.org/org/press-release/20070306eclipsecommunityawards.php">
Best Open Source Eclipse-based Developer tool
</a>.
</td>
</tr>
<tr class="a">
<td align="left"><a class="externalLink" href="https://gradle.org">Gradle</a></td>
<td>Hans Dockter (initial author)</td>
<td>Checkstyle supported out of the box</td>
<td>
<a class="externalLink" href="https://docs.gradle.org/current/userguide/checkstyle_plugin.html">
Gradle Checkstyle docs
</a>
</td>
</tr>
<tr class="b">
<td align="left"><a class="externalLink" href="https://www.jetbrains.com/idea/">IntelliJ IDEA</a></td>
<td>James Shiell</td>
<td>
<a class="externalLink" href="https://github.com/jshiell/checkstyle-idea">
Checkstyle-idea Project Page
</a>
</td>
<td>Provides real-time and on-demand scanning.</td>
</tr>
<tr class="a">
<td align="left"><a class="externalLink" href="https://www.jgrasp.org/">jGRASP</a></td>
<td>Larry Barowski</td>
<td><a class="externalLink" href="https://www.jgrasp.org/">jGRASP Home Page</a></td>
<td></td>
</tr>
<tr class="b">
<td align="left"><a class="externalLink" href="https://www.eclipse.org/">Eclipse/RAD/RDz</a></td>
<td>Roman Ivanov</td>
<td>
<a class="externalLink" href="https://github.com/sevntu-checkstyle">Project Page</a>
</td>
<td>
Extension for Eclipse-CS plugin and also an incubator for
Checkstyle checks that are not present in main stream of
Checkstyle. See the
<a class="externalLink" href="https://github.com/sevntu-checkstyle/sevntu.checkstyle/wiki">Wiki</a>
and
<a class="externalLink" href="http://sevntu-checkstyle.github.io/sevntu.checkstyle/">Blog</a>
.
</td>
</tr>
<tr class="a">
<td align="left"><a class="externalLink" href="https://www.eclipse.org/">Eclipse/RAD/RDz</a></td>
<td>Jan Burkhardt</td>
<td>
<a class="externalLink" href="https://github.com/bjrke/JSR305CheckstylePlugin">Project Page</a>
</td>
<td>
Extension for Eclipse-CS plugin which ensures nullness annotations on
methods and constructors (JSR305).
</td>
</tr>
<tr class="b">
<td align="left"><a class="externalLink" href="https://bitbucket.org/atlassian/bamboo-checkstyle-plugin">
Bamboo Checkstyle plug-in</a></td>
<td>Atlassian (formerly by Ross Rowe and Stephan Paulicke)</td>
<td><a class="externalLink" href="https://bitbucket.org/atlassian/bamboo-checkstyle-plugin">
Bamboo Checkstyle plug-in Home Page</a></td>
<td>An add-on that will parse and record CheckStyle reports and report your
style violations over time.</td>
</tr>
<tr class="a">
<td align="left">
<a class="externalLink" href="https://codeclimate.com/">Code Climate</a>
</td>
<td>Sivakumar Kailasam</td>
<td>
<a class="externalLink" href="https://github.com/sivakumar-kailasam/codeclimate-checkstyle">
codeclimate-checkstyle
</a>
</td>
<td></td>
</tr>
<tr class="b">
<td align="left">
<a class="externalLink" href="https://github.com/nikitasavinov/checkstyle-action#checkstyle-github-action">
Checkstyle GitHub Actions</a>
</td>
<td>Nikita Savinov</td>
<td><a class="externalLink" href="https://github.com/marketplace/actions/run-java-checkstyle">
Github-action Marketplace</a></td>
<td>It runs checkstyle on your Pull Requests using
<a class="externalLink" href="https://github.com/features/actions">github-actions</a> and
<a class="externalLink" href="https://github.com/reviewdog/reviewdog">reviewdog</a>
</td>
</tr>
<tr class="a">
<td align="left"><a class="externalLink" href="https://wiki.jenkins.io/display/JENKINS/Checkstyle+Plugin">Jenkins
Checkstyle plug-in</a></td>
<td></td>
<td><a class="externalLink" href="https://wiki.jenkins.io/display/JENKINS/Checkstyle+Plugin">Jenkins
Checkstyle plug-in Home Page</a></td>
<td>This plug-in is supported by the Static Analysis Collector plug-in that
collects different analysis results and shows the results in aggregated trend
graphs.</td>
</tr>
<tr class="b">
<td align="left"><a class="externalLink" href="https://maven.apache.org/">Maven</a></td>
<td>Vincent Massol</td>
<td>Checkstyle supported out of the box</td>
<td><a class="externalLink" href="https://maven.apache.org/plugins/maven-checkstyle-plugin/checkstyle.html">
example report</a></td>
</tr>
<tr class="a">
<td align="left"><a class="externalLink" href="http://tide.olympe.in/">tIDE</a></td>
<td></td>
<td>Built in</td>
<td></td>
</tr>
<tr class="b">
<td align="left"><a class="externalLink" href="https://netbeans.apache.org/front/main/index.html">NetBeans</a></td>
<td>Petr Hejl</td>
<td>
<a class="externalLink" href="https://www.sickboy.cz/checkstyle/">Checkstyle Beans</a>
</td>
<td>
Problems with source code are displayed as annotations of
the source
</td>
</tr>
<tr class="a">
<td align="left"><a class="externalLink" href="https://netbeans.apache.org/front/main/index.html">NetBeans</a></td>
<td></td>
<td>
<a class="externalLink" href="http://sqe-team.github.io">Software Quality Environment (SQE)</a>
</td>
<td></td>
</tr>
<tr class="b">
<td align="left"><a class="externalLink" href="https://www.sonarsource.com/products/sonarqube/">SonarQube</a></td>
<td>Freddy Mallet (initial author)</td>
<td><a class="externalLink" href="https://github.com/checkstyle/sonar-checkstyle">
Checkstyle SonarQube repository</a></td>
<td><a class="externalLink" href="https://sonarcloud.io/projects">Demo site of SonarQube</a></td>
</tr>
<tr class="a">
<td align="left"><a class="externalLink" href="https://www.jedit.org/">jEdit</a></td>
<td>Todd Papaioannou</td>
<td><a class="externalLink" href="https://plugins.jedit.org/plugins/?CheckStylePlugin">
JEdit CheckStylePlugin</a></td>
<td></td>
</tr>
<tr class="b">
<td align="left"><a class="externalLink" href="https://www.jetbrains.com/idea/">IntelliJ IDEA</a></td>
<td>Jakub Slawinski</td>
<td>
<a class="externalLink" href="https://plugins.jetbrains.com/plugin/4594-qaplug">QAPlug</a>
</td>
<td>Provides quality assurance features.</td>
</tr>
<tr class="a">
<td align="left"><a class="externalLink" href="https://www.jarchitect.com">JArchitect</a></td>
<td></td>
<td><a class="externalLink" href="https://www.jarchitect.com">JArchitect Home Page</a></td>
<td>Imports XML result files from CheckStyle.</td>
</tr>
<tr class="b">
<td align="left"><a class="externalLink" href="https://www.scala-sbt.org/">SBT</a></td>
<td>Andrew Johnson</td>
<td><a class="externalLink" href="https://github.com/etsy/sbt-checkstyle-plugin">
sbt-checkstyle-plugin Project Page</a></td>
<td>SBT plugin for running Checkstyle on Java source files in an SBT
project</td>
</tr>
<tr class="a">
<td align="left"><a class="externalLink" href="https://github.com/nidi3/code-assert">code-assert</a></td>
<td>Stefan Niederhauser</td>
<td><a class="externalLink" href="https://github.com/nidi3/code-assert#checkstyle-checks">
code-assert</a></td>
<td>Assert that the java code of a project satisfies certain checks. Launch
checkstyle validation from UTs</td>
</tr>
<tr class="b">
<td align="left"><a class="externalLink" href="http://jdee.sourceforge.net/">Emacs JDE</a></td>
<td>Markus Mohnen</td>
<td>Part of the standard JDEE distribution -
<a class="externalLink" href="https://github.com/jdee-emacs/jdee"></a>
</td>
<td><a class="externalLink" href="https://github.com/jdee-emacs/jdee/blob/master/jdee-checkstyle.el">
configuration could be seen at jdee-checkstyle.el</a></td>
</tr>
<tr class="a">
<td align="left"><a class="externalLink" href="https://code.visualstudio.com/">Visual Studio Code</a></td>
<td>Sheng Chen</td>
<td><a class="externalLink" href="https://marketplace.visualstudio.com/items?itemName=shengchen.vscode-checkstyle">
vscode-checkstyle</a></td>
<td>Checkstyle for Microsoft Visual Studio Code</td>
</tr>
<tr class="b">
<td align="left">
<a class="externalLink" href="https://github.com/nvuillam/mega-linter">Mega-Linter</a>
</td>
<td>Nicolas Vuillamy</td>
<td>Checkstyle supported out of the box</td>
<td>Automatically detect 35 languages, 11 formats, 15 tooling formats and copy-pastes
in your repository sources, and apply their related linters. Available as GitHub
Action, other CI tools and locally</td>
</tr>
<tr class="a">
<td align="left">
<a class="externalLink" href="https://rife2.com/bld">bld</a>
</td>
<td>Erik C. Thauvin</td>
<td><a class="externalLink" href="https://github.com/rife2/bld-checkstyle">Checkstyle Extension</a> for bld</td>
<td>An extension for checking source code in a bld project</td>
</tr>
</table>
</div>
</section>
<a name="Related_Tools_Inactive_or_Old_Tools"></a><section id="Related_Tools_Inactive_or_Old_Tools">
<h3><a name="Inactive_or_Old_Tools"></a>Inactive or Old Tools</h3>
<div class="wrapper">
<table border="0" class="bodyTable">
<tr class="a">
<th>IDE / Build tool</th>
<th>Main/Initial Author</th>
<th>Available from</th>
<th>Remarks</th>
</tr>
<tr class="b">
<td align="left"><a class="externalLink" href="https://qalab.sourceforge.net">QALab</a></td>
<td>Benoit Xhenseval</td>
<td><a class="externalLink" href="https://qalab.sourceforge.net">QALab Home Page</a></td>
<td>Supports tracking Checkstyle statistics over time.</td>
</tr>
<tr class="a">
<td align="left"><a class="externalLink" href="https://www.vim.org/">Vim editor</a></td>
<td>Xandy Johnson</td>
<td><a class="externalLink" href="https://www.vim.org/scripts/script.php?script_id=448">
Plugin Homepage</a></td>
<td>Vim file-type plug-in</td>
</tr>
</table>
</div>
</section>
<p>
If you have written a plugin for other IDEs, please let us know, so we
can provide a link here.
</p>
</section>
</div>
</div>
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