Java Coding Standards

Standards for readable, maintainable Java (17+) code in Spring Boot services.

When to Activate

• Writing or reviewing Java code in Spring Boot projects
• Enforcing naming, immutability, or exception handling conventions
• Working with records, sealed classes, or pattern matching (Java 17+)
• Reviewing use of Optional, streams, or generics
• Structuring packages and project layout

Core Principles

• Prefer clarity over cleverness
• Immutable by default; minimize shared mutable state
• Fail fast with meaningful exceptions
• Consistent naming and package structure