Understanding the Bridge Design Pattern in Java
The Bridge Design Pattern is a structural design pattern that decouples an abstraction from its implementation, allowing them to vary independently. This pattern is especially useful when dealing with complex class hierarchies that would otherwise lead to an explosion of subclasses. This post explains the Bridge Pattern using a practical example of video streaming platforms and video quality options, demonstrating how to avoid excessive subclassing through composition. What is the Bridge Design Pattern? Instead of using inheritance to combine abstraction and implementation, the Bridge Pattern uses composition to separate these concerns into different class hierarchies. This approach prevents subclass explosion and provides more flexibility in combining behaviors at runtime. Problem Illustration Consider video streaming platforms like YouTube and Netflix offering various video qualities such as HD, 4K, and 8K. A naive design would create subclasses for every combination (e.g....