[Solved] In Spring Boot, what is a primary drawback of using field injection with @Autowired? — Ans: It makes unit testing harder due to hidden dependencies | Spring Boot

Spring Boot - Inversion of Control and Dependency Injection

In Spring Boot, what is a primary drawback of using field injection with @Autowired?

AIt makes unit testing harder due to hidden dependencies

BIt improves code readability by reducing constructor code

CIt enforces immutability of dependencies

DIt automatically validates dependencies at compile time

Step-by-Step Solution

Solution:

Step 1: Understand field injection
Field injection uses @Autowired directly on fields, hiding dependencies from constructors.
Step 2: Impact on testing
Hidden dependencies make it difficult to create mocks or stubs for unit tests, reducing testability.
Final Answer:
It makes unit testing harder due to hidden dependencies -> Option A
Quick Check:
Hidden dependencies reduce testability [OK]

Quick Trick: Hidden dependencies reduce testability [OK]

Common Mistakes:

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In Spring Boot, what is a primary drawback of using field injection with @Autowired?