application.yml alternative in Spring Boot - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is the main alternative to using application.yml in Spring Boot for configuration?

The main alternative is application.properties, which uses key-value pairs instead of YAML format.

beginner

How does application.properties format differ from application.yml?

application.properties uses simple key=value lines, while application.yml uses indentation and nested structures for grouping settings.

intermediate

Can you use both application.yml and application.properties in the same Spring Boot project?

Yes, Spring Boot supports both files. Properties in application.properties override those in application.yml if keys overlap.

beginner

What is a benefit of using application.properties over application.yml?

application.properties is simpler and more familiar to many developers, especially for small or flat configurations.

intermediate

Name another alternative to application.yml for externalizing configuration in Spring Boot.

You can use environment variables or command-line arguments to override configuration values without changing files.

Which file format is an alternative to application.yml in Spring Boot?

A application.properties

B config.xml

C settings.json

D config.ini

application.properties is the standard alternative to application.yml in Spring Boot.

In Spring Boot, if the same property is defined in both application.yml and application.properties, which one takes precedence?

A application.yml

B Both are merged equally

C application.properties

D Depends on the order of files

Properties in application.properties override those in application.yml if keys overlap.

What is a key visual difference between application.yml and application.properties?

A YAML uses indentation; properties use key=value lines

B YAML uses XML tags; properties use JSON format

C YAML is binary; properties is text

D YAML is only for Java; properties is for all languages

application.yml uses indentation for structure; application.properties uses simple key=value pairs.

Which of these is NOT a way to override Spring Boot configuration besides application.yml?

A Command-line arguments

B Java source code annotations

C Environment variables

D application.properties file

Java annotations configure beans but do not override external configuration like environment variables or properties files.

Why might a developer choose application.properties over application.yml?

A Supports nested structures better

B Properties files are faster to load

C YAML is deprecated in Spring Boot

D Simpler syntax for flat configurations

application.properties is simpler and easier for flat key-value pairs, making it a good choice for simple configs.

Explain the differences and use cases between application.yml and application.properties in Spring Boot.

Think about file format and how Spring Boot prioritizes them.

List other ways to provide configuration to a Spring Boot application besides application.yml and application.properties.

Consider runtime and external sources.