Java Spring Boot for Beginners | Part 3 : Dependency Injection and Components

Java Spring Boot for Beginners - Part 3: Dependency Injection and Components

Welcome back to the third episode of Java Backend Simplified! In this video, we'll dive into one of the core concepts of Spring Boot — Dependency Injection (DI). You’ll learn how DI helps make your code more flexible and maintainable, and we’ll cover the role of components in Spring Boot, including the different types of beans and how the framework manages them.

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By the end of this tutorial, you'll understand:

👉 What Dependency Injection is and why it's essential for modern Java applications.
👉 How Spring Boot automatically wires components to simplify your code.
👉 How to use @Component, @Service, and @Repository annotations effectively.

🚀 Make sure to like, comment, and subscribe for more Java Spring Boot tutorials! Stay tuned for the next episode, where we’ll set up a database and connect it to our project using JPA!

**Timestamps:**
00:00 Introduction to Dependency Injection
00:36 Understanding Inversion of Control (IoC)
01:14 Benefits of Dependency Injection
01:52 Spring Boot IoC Container Explained
05:26 Implementing Dependency Injection in Spring Boot
08:19 Book Service Implementation
09:32 Postman Setup and Demonstration
10:55 Spring Boot Application Execution
12:10 Repository Creation and Injection
15:12 Conclusion and Next Steps

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