What dependency injection (IoC) implementations do you know?

Spring Framework (Spring Core) - the most popular and feature-rich implementation. Supports dependency injection via constructor, setter, and field, as well as various configuration methods (XML, annotations, JavaConfig).

Guice - a lightweight framework from Google. Uses annotations and Java code for configuration. Considered simpler and less verbose than Spring Core only for IoC.

PicoContainer - a minimalist IoC container focused on simplicity and extensibility. Does not use annotations or XML, relying on programmatic configuration.

Dagger - a dependency injection framework focused on performance, mainly used in Android development. Generates code at compile time, eliminating runtime overhead.

CDI (Contexts and Dependency Injection for Java EE) - a Java EE standard for dependency injection. Integrated with other Java EE specifications.

JUnit 5 (with the junit-jupiter-engine extension) - supports simple dependency injection for tests, for example, through test class constructors or @BeforeEach, @AfterEach methods.

Micronaut - a framework for building microservices that supports dependency injection at compile time, similar to Dagger, for fast startup and low memory consumption.

Quarkus - another framework for Kubernetes-native Java, which also uses compilation to speed up startup and reduce resource consumption, integrating support for CDI and other standards.