Classical inheritance is a programming concept that allows objects to inherit properties and methods from a parent object. It is an appropriate choice when there is a clear hierarchy of objects and when the child objects share common properties and methods with the parent object. For example, if we have a class called "Animal" with properties such as "name" and "age" and methods such as "eat" and "sleep", we can create child classes such as "Dog" and "Cat" that inherit these properties and methods from the parent class.
Classical inheritance can also be useful when we want to create objects that have similar functionality but with slight variations. For example, if we have a class called "Vehicle" with properties such as "make" and "model" and methods such as "start" and "stop", we can create child classes such as "Car" and "Truck" that inherit these properties and methods from the parent class but also have their own unique properties and methods such as "number of doors" and "cargo capacity".
However, it is important to note that classical inheritance can also lead to tight coupling between objects and can make it difficult to modify or extend the code in the future. It is important to carefully consider the design of the object hierarchy and to use other programming concepts such as composition and interfaces when appropriate.