Looks like field injection, behaves like constructor injection.

blog20190103.md

Spring (and likely other IoC frameworks) offer three dependency injection approaches:

1. Constructor-based - Spring injects dependencies as constructor arguments when instantiating a bean Developers using Lombok with Spring can create annotation-configured beans easily with the Lombok @RequiredArgsConstructor annotation.
2. Setter-based - Spring creates a bean through its default calls setter methods to

@Component
@RequiredArgsConstructor
public class SomeComponent {

    private final SomeDependency dependency;

}

This looks like field injection but it's actually constr

• Use annotations to configure their application context (the standard approach for Spring Boot applications)

Constructor injection vs. Setter or Field Injection

Spring bean configuration approaches: XML-based vs. Annotation-based vs. Programmatic (DSL)-based