How do I implement dependency injection in my application?

How do I implement dependency injection in my application?

Dependency injection (DI) is a design pattern used to implement IoC (Inversion of Control). It allows a class to receive its dependencies from an external source rather than creating them itself. Would you like to see an example?

Yes, please provide an example in Java.

Sure! In Java, you can use a framework like Spring. Here's a simple example:

public class Service {
    private final Repository repository;

    public Service(Repository repository) {
        this.repository = repository;
    }
}

public class Repository {
    // Repository methods
}

// In your configuration:
@Bean
public Service service() {
    return new Service(repository());
}

@Bean
public Repository repository() {
    return new Repository();
}

What are the benefits of using dependency injection?

The benefits include improved code maintainability, easier testing, and better separation of concerns. It allows for more flexible and modular code.