What are the best practices for Java dependency injection?

What are the best practices for Java dependency injection?

Some best practices include using constructor injection, keeping dependencies minimal, and leveraging frameworks like Spring.

Why is constructor injection preferred over field injection?

Constructor injection promotes immutability and makes dependencies explicit, improving testability and maintainability.

Can you explain how to use Spring for dependency injection?

Sure! In Spring, you can define beans in a configuration class or XML, and Spring will manage their lifecycle and dependencies.

What are some common pitfalls to avoid with dependency injection?

Common pitfalls include overusing dependency injection, creating circular dependencies, and not managing the lifecycle of beans properly.