Dependency Injection – DI

Dependency Injection is a programming technique that helps software systems become more flexible, easier to test, and simpler to maintain. Instead of a class or piece of code creating the things it needs, those things are supplied from the outside, allowing parts of the software to remain independent and reusable.

This means that one part of the software does not have to know the details of how other parts work, which reduces the number of connections between them. Tools such as Spring in Java or the .NET Core Dependency Injection framework in C# help automate this process. Developers often use Dependency Injection to swap out parts of an application, like changing a data storage system or testing features without connecting to real services.

Table of Contents

• Key Aspects
• Loose Coupling and Modularity
• Testability and Mocking
• Frameworks and Tools
• Injection Methods
• Separation of Concerns
• Conclusion
• Dependency Injection in a Nutshell – 3 mins

Dependency Injection in a Nutshell – 3 mins