Spring Boot Archives

How Spring Boot Handles Dependency Injection Using Annotations?

June 20, 2025 by quescol

In Spring Boot, dependency injection (DI) is handled automatically through a powerful combination of annotations. Here’s how each of these works: 1. @Component 2. @Service (Specialized @Component) 3. @Repository (Specialized @Component) 4. @Autowired ✅ Note: Since Spring 4.3, if there’s only one constructor, @Autowired is optional. 🔁 How It All Works Together: 🧠 In Summary: … Read more

How Does Spring Boot Work Internally? (Explained Step-by-Step)

June 20, 2025 by quescol

Spring Boot starts with @SpringBootApplication, loads required dependencies using starters, configures them automatically using @EnableAutoConfiguration, and scans for your components using @ComponentScan all this with minimal setup! But there are lots of things happens behind the scenes to simplify development. Here’s a breakdown of the internal working: 1. @SpringBootApplication and main() – Entry Point 2. … Read more