[Solved] What happens when you define multiple profiles in Spring Boot and activate one of them? — Ans: Only the properties from the active profile override the default properties | Spring Boot

Spring Boot - Application Configuration

What happens when you define multiple profiles in Spring Boot and activate one of them?

AOnly the properties from the active profile override the default properties

BAll profiles' properties are merged regardless of activation

CProfiles are ignored unless explicitly referenced in code

DSpring Boot disables default properties when any profile is active

Step-by-Step Solution

Solution:

Step 1: Understand profile activation
Activating a profile tells Spring Boot to load properties specific to that profile.
Step 2: Property overriding behavior
Properties in the active profile override those in the default application.properties.
Final Answer:
Only the properties from the active profile override the default properties -> Option A
Quick Check:
Active profile properties take precedence [OK]

Quick Trick: Active profile properties override defaults [OK]

Common Mistakes:

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What happens when you define multiple profiles in Spring Boot and activate one of them?