Java Standards

Java service standards for Bitso projects.

When to use this skill

Creating new Java services or modules
Understanding project organization patterns
Reviewing Java code for standards compliance
Configuring MapStruct for object mapping
Verifying builds after code changes

Skill Contents

Sections

When to use this skill (L24-L31)
Tech Stack (L54-L67)
Project Organization (L68-L83)
Build Verification (L84-L97)
References (L98-L105)
Related Rules (L106-L111)
Related Skills (L112-L118)

Available Resources

📚 references/ - Detailed documentation

Tech Stack

| Component | Version | Notes | |-----------|---------|-------| | Java | 21 (LTS) | Current LTS version | | Gradle | 9.2.1 | Recommended for all projects | | Spring Boot | 3.5.9 | Latest (min 3.5.9) - preparing for Spring Boot 4 | | Database Access | jOOQ | For accessing PostgreSQL | | Databases | PostgreSQL, Redis | Primary data stores | | Inter-service Communication | gRPC | Standard protocol | | Object Mapping | MapStruct | For DTO/domain mapping |

For Spring Boot upgrades, use /upgrade-to-recommended-versions.

Project Organization

Projects should be organized with domain-based modules:

root-project/
├── build.gradle
├── settings.gradle
├── docs/                    # Documentation
├── bitso-libs/              # Library modules
│   ├── <subdomain>/         # Domain logic
│   └── <subdomain-proto>/   # Protobuf definitions
└── bitso-services/          # Service modules
    └── <domain>/            # Spring Boot application

Build Verification

After updating Java or Groovy code, verify changes:

# Run tests to verify changes
./gradlew test 2>&1 | grep -E "FAILED|Error" || echo "All tests passed"

# Or run full build with tests
./gradlew build 2>&1 | grep -E "FAILED|Error" || echo "Build successful"

If problems are found, fix them before committing.

References

| Reference | Description | |-----------|-------------| | references/services.md | Tech stack, project structure, dependency management, MapStruct | | references/code-review.md | Java 21 standards, coding style, var keyword usage | | references/build-verification.md | Build commands and verification practices |

Related Rules

java-services-standards - Full-service standards
java-code-review-standards - Code review guidelines
java-run-build-after-changes - Build verification

Related Skills

| Skill | Purpose | |-------|---------| | gradle-standards | Gradle configuration | | grpc-services-rfc-33 | gRPC service implementation | | database-integration | jOOQ and Flyway |