Factory Pattern

In Factory pattern, we create object without exposing the creation logic to the client and refer to newly created object using a common interface.

this pattern provides one of the best ways to create an object.

Implementation

We’re going to create a Shape interface and concrete classes (CIRCLE / RECTANGLE / SQUARE) implementing the Shape interface. A factory class ShapeFactory is defined as a next step.

FactoryPatternDemo, our demo class will use ShapeFactory to get a Shape object. It will pass information (CIRCLE / RECTANGLE / SQUARE) to ShapeFactory to get the type of object it needs.