Dependency Injection · interview question
Why is constructor injection preferred over field injection in terms of immutability?
Multiple choiceMediumchapter-9-curatedpremiumdependency-injectionconstructor-vs-field-injection
Answer and explanation
Correct answer
D. Constructor injection makes dependencies immutable
Why
Constructor injection allows dependencies to be marked as 'final,' which ensures that they are set once and cannot be changed, thereby providing immutability. Field injection does not support this immutability feature as easily.
Test yourself on Dependency Injection
A free test with instant, explained results. No account needed.
More Dependency Injection questions
- In Spring Boot, how can you ensure that a bean is eagerly initialized at startup?
- What advantage does constructor injection offer over field injection concerning encapsulation?
- In Spring Boot, how does lazy initialization of beans affect constructor injection?
- How does Spring Boot handle dependency injection when multiple beans match the type being injected?
- Which scope of a bean in Spring Boot is the default in Java?
- Why do teams use the @Autowired annotation in Spring Boot in production code?