Spring Boot

Spring Boot is the primary application framework covered by the initial AI Coding Skills Java work. Skills target conventional layered applications with validation, persistence options, Actuator, and tests.

Framework overview

Spring Boot provides opinionated defaults for dependency management, auto-configuration, embedded servers, and production-ready endpoints. AI Coding Skills focuses on:

Spring Web REST APIs
Configuration and @ConfigurationProperties
Bean Validation
Persistence with Spring Data patterns
Testing with Spring Boot Test and Testcontainers where appropriate
Actuator health and operational endpoints

Supported Java versions

Java	Notes
21	Preferred for new projects
17	Supported for compatibility

Supported framework versions

Skills should target a current stable Spring Boot 3.x line unless a skill page states otherwise. Pin exact versions in generated builds and update skills when breaking changes land.

Programming model

Typical generated applications use:

A single @SpringBootApplication entry point
Package-by-feature or layered packages under a clear base package
Controllers → services → repositories
application.yml for configuration
Unit and slice/integration tests under src/test/java

Common project structure

src/
├── main/
│   ├── java/
│   │   └── com/example/app/
│   │       ├── Application.java
│   │       └── customer/
│   │           ├── CustomerController.java
│   │           ├── CustomerService.java
│   │           ├── CustomerRepository.java
│   │           └── CustomerResponse.java
│   └── resources/
│       └── application.yml
└── test/
    └── java/

Relevant skills

Skill	Status
Spring Boot Bootstrap	Available

Future skills may cover testing, security, modernization, and observability without replacing this framework page.

Available examples

Spring Boot REST APILayered REST API reference application.

Platform availability

Platform	Bootstrap skill status
GitHub Copilot	Planned
Grok	Available
Claude Code	Planned

Details: compatibility matrix.

Official documentation

Spring Boot reference documentation

Compatibility notes

Prefer Jakarta EE namespace APIs (jakarta.*) with Spring Boot 3.
Keep Actuator exposure intentional; do not enable sensitive endpoints by default.
When adding persistence, include test strategy (in-memory or Testcontainers) in the same change set when practical.