java-scaffold

name	java-scaffold
description	Generates Quarkus project scaffolds with BCE architecture (Boundary-Control-Entity), Panache entities, RESTEasy Reactive endpoints, and LangChain4j AI services. Use this skill when creating new modules, entities, or REST endpoints in Quarkus projects.

Java Scaffold Skill

Purpose

Generate runnable Quarkus project structures following the BCE pattern.

Tech Stack

• Quarkus (current LTS), Java 21 (Records, Pattern Matching, Sealed Classes)
• RESTEasy Reactive (not Classic)
• Hibernate ORM with Panache (Active Record or Repository)
• Jackson for JSON (quarkus-rest-jackson)
• LangChain4j via quarkus-langchain4j-ollama for AI services

BCE Package Structure

src/main/java/de/example/module/
├── boundary/        # REST resources, WebSocket endpoints
├── control/         # Business services, AI services
├── entity/          # JPA entities, Records/DTOs, Value Objects
└── config/          # ConfigMappings, exception mappers

Conventions

• Java Records for DTOs and API responses
• CDI (@ApplicationScoped, @Inject) instead of manual instantiation
• @ConfigProperty or @ConfigMapping for configuration
• @ServerExceptionMapper for error handling
• Logging via @Inject Logger or Log.info()

Output

Generated code always includes:

1. All necessary imports
2. Matching application.properties configuration
3. Maven dependencies as a <dependency> block
4. Notes on required Dev Services or Ollama models