[Solved] What will happen if a Spring bean implements InitializingBean and overrides afterPropertiesSet()? — Ans: afterPropertiesSet() is called after dependency injection | Spring Boot

Spring Boot - Inversion of Control and Dependency Injection

What will happen if a Spring bean implements InitializingBean and overrides afterPropertiesSet()?

AafterPropertiesSet() is called before bean instantiation

BafterPropertiesSet() is called after dependency injection

CafterPropertiesSet() is called during bean destruction

DafterPropertiesSet() is never called automatically

Step-by-Step Solution

Solution:

Step 1: Recall InitializingBean behavior
afterPropertiesSet() runs after dependencies are injected to allow custom initialization.
Step 2: Confirm lifecycle timing
This method is called before the bean is ready but after injection, not before instantiation or during destruction.
Final Answer:
afterPropertiesSet() is called after dependency injection -> Option B
Quick Check:
afterPropertiesSet() runs post-injection [OK]

Quick Trick: afterPropertiesSet() runs after dependencies injection [OK]

Common Mistakes:

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What will happen if a Spring bean implements InitializingBean and overrides afterPropertiesSet()?