You want to create a service that depends on two other services managed by Spring IoC. How should you design the constructor to follow best practices?

hard📝 Conceptual Q8 of 15

Spring Boot - Inversion of Control and Dependency Injection

ADeclare dependencies as public fields and assign them later

BUse constructor injection with both dependencies as parameters

CUse static methods to access dependencies

DManually instantiate dependencies inside the constructor

Step-by-Step Solution

Solution:

Step 1: Understand dependency injection best practice
Constructor injection is preferred for mandatory dependencies.
Step 2: Design constructor with parameters for both dependencies
Pass both dependencies as constructor parameters so Spring can inject them.
Final Answer:
Use constructor injection with both dependencies as parameters -> Option B
Quick Check:
Constructor injection for multiple dependencies = Best practice [OK]

Quick Trick: Inject all required dependencies via constructor parameters [OK]

Common Mistakes:

Instantiating dependencies manually inside constructor
Using static methods for dependencies
Exposing dependencies as public fields

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More Spring Boot Quizzes

You want to create a service that depends on two other services managed by Spring IoC. How should you design the constructor to follow best practices?

Step 1: Understand dependency injection best practice

Step 2: Design constructor with parameters for both dependencies

Final Answer:

Quick Check:

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