java-coding-standards
Java coding standards for Spring Boot services: naming, immutability, Optional usage, streams, exceptions, generics, and project layout.
npx skills add vibeeval/vibecosystem --skill java-coding-standards --agent claude-code
Same command for any agent — swap --agent for codex, cursor, copilot.
Weekly change comes from our own snapshots, not the repository page — it measures attention, not adoption.
# Java Coding Standards Standards for readable, maintainable Java (17+) code in Spring Boot services. ## Core Principles - Prefer clarity over cleverness - Immutable by default; minimize shared mutable state - Fail fast with meaningful exceptions - Consistent naming and package structure ## Naming ```java // ✅ Classes/Records: PascalCase public class MarketService {} public record Money(BigDecimal amount, Currency currency) {} // ✅ Methods/fields: camelCase private final MarketRepository marketRepository; public Market findBySlug(String slug) {} // ✅ Constants: UPPER_SNAKE_CASE private static final int MAX_PAGE_SIZE = 100; ``` ## Immutability ```java // ✅ Favor records and final fields public record MarketDto(Long id, String name, MarketStatus status) {} public class Market { private final Long id; private final String name; // getters only, no setters } ``` ## Optional Usage ```java // ✅ Return Optional from find* methods Optional<Market> market = marketRepository.findBySlug(slug); // ✅ Map/flatMap instead of get() return market .map(MarketResponse::from) .orElseThrow(() -> new EntityNotFoundException("Market not found")); ``` ## Streams Best Practices ```java // ✅ Use streams for
- Core Principles
- Naming
- Immutability
- Optional Usage
- Streams Best Practices
- Exceptions
- Generics and Type Safety
- Project Structure (Maven/Gradle)
- Formatting and Style
- Code Smells to Avoid
- Logging
- Null Handling
- Testing Expectations
What does the java-coding-standards skill do?
Java coding standards for Spring Boot services: naming, immutability, Optional usage, streams, exceptions, generics, and project layout.
How do I install it?
Run `npx skills add vibeeval/vibecosystem --skill java-coding-standards --agent claude-code` — it drops the skill into your project so the agent can pick it up. Swap the --agent value for codex, cursor or copilot if you use one of those.
Where does this skill come from?
From vibeeval/vibecosystem, a repository with 521 stars. We read it straight from the repository tree rather than a submitted listing, so what you see here is what is actually published.
Is a popular skill a good skill?
Not necessarily. Stars measure attention, not adoption — a repository can trend for a week and be abandoned. That is why we show the weekly change from our own snapshots next to the total, instead of a single flattering number.