Chapter 11: Understanding @SpringBootApplication Annotation | Spring Boot Course

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Chapter 12: Spring Boot DevTools | Spring Boot Course

In this chapter, we will learn everything about the @SpringBootApplication Annotation with examples.

If you’ve ever started a Spring Boot project, you’ve probably seen this line at the top of your main class:

@SpringBootApplication
public class MyApplication {
    public static void main(String[] args) {
        SpringApplication.run(MyApplication.class, args);
    }
}

But what does @SpringBootApplication actually do? And why is it important?

Let’s break it down in simple terms.

What Is @SpringBootApplication?

@SpringBootApplication is a special annotation that tells Spring Boot to:

• Set up the basic configuration
• Scan for components (like @Controller, @Service, etc.)
• Enable auto-configuration so your app is ready to run

In short: It bootstraps your entire Spring Boot app.

What Is It Made Of?