java-coding-standardslisted

# Java Coding Standards Standards for readable, maintainable Java (17+) code in Spring Boot and Quarkus services. ## When to Use - Writing or reviewing Java code in Spring Boot or Quarkus 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 - **[QUARKUS]**: Working with CDI scopes, Panache entities, or reactive pipelines ## How It Works ### Framework Detection Before applying standards, determine the framework from the build file: - Build file contains `quarkus` → apply **[QUARKUS]** conventions - Build file contains `spring-boot` → apply **[SPRING]** conventions - Neither detected → apply shared conventions only ## Core Principles - Prefer clarity over cleverness - Immutable by default; minimize shared mutable state - Fail fast with meaningful exceptions - Consistent naming and package structure - **[QUARKUS]**: Favor build-time over runtime processing; avoid runtime reflection where possible ## Examples The sections below show concrete Spring Boot, Quarkus, and shared Java examples for naming, immutability, dependency injection, reactive code, exceptions, project layout, logging, configuration, and tests. ## Naming ```java // PASS: Classes/Records: PascalCase public class MarketService {} public record Money(BigDecimal amount, Currency currency) {} // PASS: Methods/fields: cam