Dependency Injection (DI) is a design pattern that enables flexible and modular code by decoupling dependencies from their implementations. 🛠️

  • Core Concept: Instead of classes creating their own dependencies, they are provided by external sources (e.g., frameworks, containers).
  • Key Benefits:
    • Promotes testability 🧪
    • Enhances code reusability 🔄
    • Simplifies maintenance and scalability 📈

For deeper exploration, check our guide on Dependency Injection Principles.

Dependency_Injection

DI is widely used in frameworks like Spring_Framework and Angular. For practical examples, visit Spring DI Tutorial.

Spring_Framework

In software architecture, DI helps achieve loose coupling and high cohesion. 🧱

  • Implementation Types:
    • Constructor Injection 📦
    • Setter Injection 🛠️
    • Interface Injection 🧾

Explore how DI works in different programming languages through our Language-Specific Guides.