What are Spring Boot annotations and how do they work?

What are Spring Boot annotations and how do they work?

Spring Boot annotations are special markers in Java code that provide metadata to configure the application. They simplify the setup and reduce boilerplate code.

Can you give me some examples of commonly used Spring Boot annotations?

Sure! Some commonly used annotations include @SpringBootApplication, @RestController, @RequestMapping, and @Autowired.

What does the @SpringBootApplication annotation do?

The @SpringBootApplication annotation is a convenience annotation that combines @Configuration, @EnableAutoConfiguration, and @ComponentScan, enabling auto-configuration and component scanning.

How do I create a custom annotation in Spring Boot?

To create a custom annotation, define a new annotation interface and use it with the desired target and retention policies. Then, implement the logic in a component that processes this annotation.