Design Pattern

Singleton Pattern

• Ensures that only one instance of a class can exist and provides a global point of access to it.

Factory Pattern

• Provides an interface for creating objects in a superclass, but allows subclasses to alter the type of objects that will be created.

Abstract Factory Pattern

• Provides an interface for creating related objects, without specifying their concrete classes.

Builder Pattern

• Allows objects to be created step-by-step, with the ability to skip or repeat certain steps, and to produce different variations of an object.

Adapter Pattern

• Allows objects with incompatible interfaces to work together by creating a wrapper object that translates between them.

Decorator Pattern

• Allows behavior to be added to an individual object, either statically or dynamically, without affecting the behavior of other objects from the same class.

Observer Pattern

• Allows an object to maintain a list of its dependents and notify them automatically when it changes state.

Strategy Pattern

• Allows different algorithms to be selected dynamically at runtime, without changing the interface of the object that uses them.

Template Method Pattern

• Defines the skeleton of an algorithm in a superclass, but allows its subclasses to override certain steps of the algorithm without changing its structure.

Composite Pattern

• Allows objects to be treated as a tree-like structure, with individual objects and groups of objects treated in the same way.