Why do dependency injection frameworks prefer constructor injection over property or method injection?

hard📝 Conceptual Q10 of 15

LLD - Advanced LLD Concepts

AMethod injection is the only way to inject dependencies

BConstructor injection ensures dependencies are provided when object is created, improving immutability and testability

CProperty injection is faster and preferred for all cases

DConstructor injection hides dependencies making code harder to read

Step-by-Step Solution

Solution:

Step 1: Understand injection types
Constructor injection provides dependencies at creation, making objects immutable and easier to test.
Step 2: Compare benefits
Property and method injection can allow changing dependencies later, reducing safety.
Final Answer:
Constructor injection ensures dependencies are provided when object is created, improving immutability and testability -> Option B
Quick Check:
Constructor injection benefits = Immutability and testability [OK]

Quick Trick: Constructor injection improves safety and testing [OK]

Common Mistakes:

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