Spring Dependency Injection Types Explained

There are several ways in which Spring implements dependency injection.

1. Constructor injection is when dependencies are injected into an object through its constructor.
2. Setter injection: Injecting dependencies through setter methods.
3. Interface injection is the process of injecting dependency objects through the setter methods of an interface.
4. Annotation Injection: It is a method of marking dependent objects using annotations and then utilizing an annotation parser to perform the injection.
5. Autowiring: Spring automatically searches for dependent objects based on their type and injects them into the corresponding properties.

The above are common ways Spring implements dependency injection, you can choose the appropriate method based on your actual needs.