Dependency Injection · interview question
Why is constructor injection preferred for mandatory dependencies?
Multiple choiceMediumchapter-9-curatedpremiumdependency-injectionconstructor-vs-field-injection
Answer and explanation
Correct answer
C. It makes dependencies explicit and keeps the object valid at creation time
Why
Constructor injection shows what the class needs up front and makes direct unit testing easier. Hidden dependencies are harder to reason about and easier to misuse.
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