Dart Abstract Class : Can't Instantiate Abstract Class

Can't Instantiate Abstract Class :

• Abstract classes cannot be instantiated directly, meaning you cannot create
  objects of an abstract class using the new keyword.

• Abstract classes can contain abstract methods, which are methods without a body.

• Subclasses inheriting from an abstract class must implement these abstract methods.

• Abstract classes are designed to be extended by subclasses.

• Subclasses inherit the properties and methods of the abstract class and can provide their own implementations.

• Abstract classes are often used when you want to define a common interface or behaviour that multiple classes should adhere to.

• They provide a way to ensure consistency and enforce certain methods to be implemented by subclasses.

• They are commonly used in design patterns like the Factory pattern or as base classes for creating polymorphic relationships.