Spring Boot FAQ: Top Questions

8. How can you configure properties in a Spring Boot application?

Spring Boot allows configuration using application.properties or application.yml files. You can also use environment variables, command-line arguments, or @Value and @ConfigurationProperties annotations.

📘 Example:

server.port=8081
spring.datasource.url=jdbc:h2:mem:test

🏆 Expected Output:

Application runs on port 8081 and uses in-memory H2 database.

🛠️ Use Cases:

Managing environment-specific settings.
Externalizing credentials and URLs.
Making applications configurable and portable.

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