[Solved] Given the following application.properties content:spring.profiles.active=dev server.port=9090What will be the server port when running the app with the dev profile? | Spring Boot

Spring Boot - Application Configuration

Given the following application.properties content:

spring.profiles.active=dev
server.port=9090

What will be the server port when running the app with the dev profile?

A9090 (from properties file)

B8080 (default port)

CRandom port assigned at runtime

DApplication will fail to start

Step-by-Step Solution

Solution:

Step 1: Identify active profile and property
The active profile is set to dev, and server.port=9090 is defined.
Step 2: Understand profile effect on configuration
Since server.port is set in the active profile, the app uses port 9090.
Final Answer:
9090 (from properties file) -> Option A
Quick Check:
Active profile sets server.port to 9090 [OK]

Quick Trick: Active profile properties override defaults [OK]

Common Mistakes:

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