Checkstyle
| Company type | Free software |
|---|---|
| Industry | Software development |
| Founded | 2001 |
| Founder | Oliver Burn |
| Products | Static code analysis tool for Java |
| Website | checkstyle |
Checkstyle is a static code analysis utility utilized in software development to ensure that Java source code adheres to predefined coding standards.
Created by Oliver Burn in 2001, Checkstyle is currently supported by an international group of contributors. The latest stable version, 10.23.0, is compatible with Java editions 11 through 17.
Benefits and limitations
Implementing uniform programming style improves code clarity, maintainability, and reuse, which can lead to reduced development expenses. Checkstyle primarily addresses code formatting and stylistic guidelines rather than assessing the accuracy or completeness of the code itself.
Sample modules available
Checkstyle provides customizable modules that enforce rules with different levels of enforcement (required or optional). These modules can produce alerts, warnings, or errors. Notable inspections include:
- Javadoc documentation for classes, fields, and methods;
- Naming standards for fields and methods;
- Restrictions on method parameter counts;
- Limits on line length;
- Requirement of file headers;
- Controls over import directives and access modifiers;
- Character spacing conventions;
- Guidelines for class structure;
- Various complexity metrics.
Implementation
Packaged as a JAR archive, Checkstyle operates within a Java VM environment or as an Apache Ant task. It also integrates seamlessly with IDEs and other software development tools.
See also
- List of tools for static code analysis
- EclipseCS – Checkstyle plugin for Eclipse
- Checkstyle-IDEA – Plugin supporting IntelliJ IDEA and Android Studio
- SevNTU-Checkstyle – Extension for EclipseCS providing additional checks beyond core functionality
- Checkstyle Addons – Supplementary Checkstyle rules
- Checkstyle for PHP – PHP version of Checkstyle