Composite design pattern is a structural pattern which modifies the structure of an object. This pattern is most suitable in cases where you need to work with objects which form a tree like hierarchy. In that tree, each node/object (except root node) is either composite or leaf node. Implementing the composite pattern lets clients treat […]
Bridge Design Pattern
Bridge design pattern is used to decouple a class into two parts – abstraction and it’s implementation – so that both can evolve in future without affecting each other. It increases the loose coupling between class abstraction and it’s implementation. Table of Contents Design participants of bridge design pattern When we need bridge design pattern […]
Adapter Design Pattern in Java
Ever tried to use a your camera memory card in your laptop. You cannot use it directly simply because there is no port in laptop which accept it. You must use a compatible card reader. You put your memory card into card reader and then inject card reader into laptop. This card reader can be […]
Decorator Design Pattern in Java
In software engineering, decorator design pattern is used to add additional features or behaviors to a particular instance of a class, while not modifying the other instances of same class. Decorators provide a flexible alternative to sub-classing for extending functionality. Please note that the description above implies that decorating an object changes its behavior but […]