modern-java-21 - Modern Java 21+ Coding Standard
Applies Java 21+ coding rules when Java files are created, modified, refactored, fixed, or reviewed.
Tags
Updated: 2026-10-07Capabilities
Typical Inputs
Typical Outputs
What this skill does
- Clean and order imports
- Use modern Java features
- Prefer immutable data
- Apply nullability rules
- Enforce code size limits
- Run compile checks
Inputs
- Java source files
- Configured Java release
- Project quality-gate configuration
- Relevant skill references
Outputs
- Modified Java source files
- Import validation results
- Compile or analysis results
- Code review findings
Requirements
- Java 21 or higher configured