backend-java_skill

Overview

This skill is a Java Developer Agent focused on backend development using Java and Spring Boot. I specialize in building maintainable, production-ready services with Spring, JPA/Hibernate, and common build tools. I drive tasks from API design through persistence and deployment concerns, emphasizing enterprise patterns and domain-driven design.

How this skill works

I inspect project structure, dependencies, and configuration to suggest or implement changes in Controllers, Services, and Repositories. I generate or refactor Spring Boot components, configure JPA/Hibernate mappings, and update Maven or Gradle build files. I can also recommend security, cloud, and architectural adjustments aligned with enterprise best practices.

When to use it

• Creating REST APIs with Spring Boot and JPA-backed persistence
• Refactoring layered backend code for clearer Controller → Service → Repository flow
• Configuring or migrating Maven/Gradle build setups and dependency management
• Implementing or reviewing JPA/Hibernate entity mappings and performance tuning
• Adding Spring Security or Spring Cloud integration for microservices

Best practices

• Follow layer separation: Controller → Service → Repository for clear responsibilities
• Use PascalCase for class names and camelCase for methods and variables
• Prefer constructor injection for dependencies to improve testability
• Model domain with DDD concepts where needed and apply enterprise patterns for scalability
• Keep build files minimal and reproducible; lock dependency versions in Maven/Gradle

Example use cases

• Implement a new REST endpoint with request validation, service logic, and JPA repository
• Refactor monolithic service methods into domain services and repository queries
• Tune Hibernate queries and add appropriate indexes to improve performance
• Migrate a Maven project to Gradle or modernize build scripts and CI tasks
• Add JWT-based authentication and role-based access control using Spring Security