Spring Boot 3 Project Official

| Component | Minimum Version | |-----------|----------------| | Java | 17 (or 19/21 for LTS) | | Maven | 3.6+ | | Gradle | 7.5+ | | Tomcat (embedded) | 10.1 | | Jakarta EE | 9+ |

public record UserDto(String id, String email, String name) {}

private String name;

@Column(unique = true, nullable = false) private String email;

./mvnw spring-boot:run -Dspring-boot.run.profiles=dev spring boot 3 project

The most significant change is the move from javax.* to jakarta.* packages. If you are migrating an old project, this requires a full namespace refactoring. For a , you get immediate compatibility with the latest servlet specifications.

@HttpExchange(url = "/api/users") public interface UserClient @GetExchange("/id") User getUser(@PathVariable Long id); @PostExchange User createUser(@RequestBody User user); @PostExchange User createUser(@RequestBody User user)

Spring Boot 3.0, released in November 2022, represents a fundamental shift in the Java ecosystem. It is not merely an incremental update but a modern foundation for cloud-native, container-first applications. Built on Spring Framework 6, it requires and fully embraces Jakarta EE 9+ (replacing the old javax.* namespace).