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Autoired CartService cartService didnt use in the class

Hi, can you explain me why did Autowired in orderService class and where use it in the class orderService !!

@Autowired
private CartService cartService;


Course: Develop an E-Commerce App Using Java, Spring Boot and Vue.js - Learn Interactively
Lesson: Stripe Checkout Back-end - Develop an E-Commerce App Using Java, Spring Boot and Vue.js


Course: Develop an E-Commerce App Using Java, Spring Boot and Vue.js - Learn Interactively
Lesson: Stripe Checkout Back-end - Develop an E-Commerce App Using Java, Spring Boot and Vue.js


Course: Develop an E-Commerce App Using Java, Spring Boot and Vue.js - Learn Interactively
Lesson: Stripe Checkout Back-end - Develop an E-Commerce App Using Java, Spring Boot and Vue.js

Hi @ayman!
The @Autowired annotation in this code is used for dependency injection. Dependency injection is a design pattern where an object’s dependencies are injected into it at runtime rather than being instantiated within the object. The @Autowired annotation is used to automatically wire up the dependencies for an object.

In this code, the OrderController class has a dependency on the OrderService class, which is why the @Autowired is used. This means that Spring will automatically inject an instance of the OrderService class into the OrderController class at runtime without the need for manual instantiation or initialization.

By using dependency injection, the code is more modular and maintainable since it decouples the application components and makes them easier to test and modify independently.

I hope this answers your query. Thanks!

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thank you very much

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