How do I implement dependency injection in Spring?
To implement dependency injection in Spring, you can use annotations like @Autowired or XML configuration.
Can you explain the difference between constructor injection and setter injection?
Constructor injection requires the dependencies to be provided at the time of object creation, while setter injection allows them to be set later.
Which method is preferred in Spring?
Constructor injection is generally preferred as it makes the dependencies explicit and ensures that the object is always in a valid state.
What are some common pitfalls to avoid?
Common pitfalls include circular dependencies, not using @Component for your classes, and forgetting to enable component scanning.
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