Learning Spring Boot from Zero to Cloud: Part 18 – dependency injection strategies

Welcome to Part 18 of our series “Learning Spring Boot from Zero to Cloud”.
In this video, we dive into one of the core pillars of the Spring framework: Dependency Injection (DI) and its strategies.

🔍 What you’ll learn:
✅ What is a Bean in Spring Boot
✅ How Spring Boot detects, scans, and manages beans
✅ Different strategies for dependency injection:
🔹 Constructor Injection
🔹 Setter Injection
🔹 Field Injection
✅ The advantages and disadvantages of each strategy
✅ Best use cases for each approach
✅ How Spring’s IoC container wires dependencies in the correct order

💡 Extra insights:
Spring Boot embraces the concept of Inversion of Control (IoC) — giving control of object creation and wiring to the framework. By leveraging annotations like @Component, @Service, @Autowired, and others, Spring ensures your components are loosely coupled and easy to test.

Understanding how and when Spring uses each injection strategy is essential for building clean, maintainable, and scalable applications. Whether you’re building REST APIs, microservices, or preparing for deployment to the cloud, this knowledge is foundational.

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springboot, spring, dependencyinjection, springbeans, java, backenddevelopment, microservices, inversionofcontrol, ioc, setterinjection, constructorinjection, fieldinjection, javadeveloper