What is Dependency Injection and Is is implemented in project and How?

Question

Accepted Answer

Dependency Injection is a design pattern used to remove hard-coded dependencies and make code more flexible and testable.

Dependency Injection is implemented by injecting the required dependencies into a class rather than creating them within the class.
This can be achieved through constructor injection, setter injection, or interface injection.
For example, in Java, Spring Framework provides a powerful dependency injection mechanism through its @Autowired annotation.
Dependency Injection helps in achieving loose coupling between classes and makes it easier to change dependencies without affecting the code.
It also makes unit testing easier as dependencies can be easily mocked or stubbed.

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