My Favorite Free Courses to Learn Design Patterns in Depth DEV Community
It defines a higher-level interface that makes the subsystem easier to use. We define an abstract Graphic class with a draw() method and add() and remove() methods that throw UnsupportedOperationException by default. The Circle class (leaf) extends Graphic and overrides the draw() method. They include the likes of the Driver Pattern, Mapper Pattern, Active Record … Read more