Daily Term: Dependency Injection

Dependency Injection

Dependency Injection (DI) is a design pattern where a class’s dependencies are provided externally rather than created internally, often through constructors or setters. For example, a Java class might receive a database connection via its constructor, making it easier to swap implementations (e.g., for testing). DI promotes loose coupling and testability, but it can add complexity and boilerplate code, especially in languages without native DI support.

Date: 2025-11-29