Spring Boot
An opinionated, convention-based framework built on the Spring platform for Java.
CurrentadvancedGuide only -- no course yet
Overview
Spring Boot simplifies building production-ready Java applications on top of the broader Spring framework, providing auto-configuration and sensible defaults so a working web service can start with minimal boilerplate, while still allowing the full power of Spring underneath.
- What it is
- An opinionated, auto-configuring layer on top of the Spring framework for building Java applications quickly.
- Why it's used
- For Java teams that want Spring's dependency injection and ecosystem without hand-assembling extensive XML/Java configuration.
- Where it fits
- Built on Java; the dominant choice for new Java-based backend services.
Core concepts
- Dependency injection (@Autowired)
- REST controllers (@RestController)
- Auto-configuration
- Spring Data (repositories)
Example
Like ASP.NET, Spring Boot uses annotations (@RestController, @GetMapping) to declaratively wire HTTP routes to methods -- a pattern common across statically-typed backend frameworks.
@RestController
public class UserController {
@GetMapping("/users/{id}")
public User getUser(@PathVariable int id) {
return new User(id);
}
}Common use cases
- Enterprise Java microservices
- Large-scale backend systems
Project ideas
- A REST controller exposing CRUD endpoints backed by an in-memory repository