What are the best practices for dependency injection in Java?

What are the best practices for dependency injection in Java?

Some best practices include using constructor injection, keeping dependencies minimal, and using interfaces.

Can you explain why constructor injection is preferred?

Constructor injection ensures that dependencies are provided at the time of object creation, promoting immutability.

What are the downsides of field injection?

Field injection can lead to hidden dependencies and makes it harder to test classes in isolation.

How can I manage dependencies in a large application?

Using a dependency injection framework like Spring can help manage dependencies effectively in large applications.