Given the following application.properties and application-dev.properties files, what will be the value of app.message if the active profile is dev?

medium📝 component behavior Q4 of 15

Spring Boot - Docker and Deployment

Given the following application.properties and application-dev.properties files, what will be the value of app.message if the active profile is dev?

application.properties:
app.message=Hello from default

application-dev.properties:
app.message=Hello from dev

AHello from default

BHello from dev

Capp.message not found

DApplication will fail to start

Step-by-Step Solution

Solution:

Step 1: Understand profile-specific property overriding
When a profile is active, its properties override the default ones.
Step 2: Check which profile is active and property values
The 'dev' profile is active, so 'app.message' from 'application-dev.properties' is used.
Final Answer:
Hello from dev -> Option B
Quick Check:
Active profile properties override default [OK]

Quick Trick: Active profile properties override defaults [OK]

Common Mistakes:

Assuming default properties always apply
Thinking both values merge
Expecting startup failure

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More Spring Boot Quizzes

Given the following application.properties and application-dev.properties files, what will be the value of app.message if the active profile is dev?

Step 1: Understand profile-specific property overriding

Step 2: Check which profile is active and property values

Final Answer:

Quick Check:

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