Spring Boot Externalized Configuration and Profiles 4

Question 1

Which directory location takes the highest precedence for application.properties in a default Spring Boot setup?

Accepted Answer

/config subdirectory of the current directory

Answer

The ./config/ subdirectory has the highest file-system precedence in Spring Boot's default config file search order.

Question 2

What is the correct way to inject a property named 'app.max-retries' into a Spring bean field?

Accepted Answer

@Value("${app.max-retries}")

Answer

@Value uses ${...} syntax for property placeholders to resolve values from the Environment.

Question 3

What does the @EnableConfigurationProperties annotation do?

Accepted Answer

Registers specified @ConfigurationProperties classes as beans

Answer

@EnableConfigurationProperties registers the specified @ConfigurationProperties-annotated classes as Spring beans.

Question 4

Which Spring Boot test slice annotation loads only configuration-related beans for faster tests?

Accepted Answer

@ConfigurationPropertiesTest

Answer

@ConfigurationPropertiesTest loads only ConfigurationProperties beans, making it lightweight for testing property binding.

Question 5

How can you provide default values for a property injected via @Value?

Accepted Answer

@Value("${prop:defaultValue}")

Answer

The colon syntax ${property:default} provides a fallback when the property is not defined.

Spring Boot Practice Test