OOP2 Understanding Inheritance in OOP

What is inheritance in object-oriented programming?

• A mechanism to create private attributes

• A way to reuse code by creating a new class from an existing class

• A method to delete attributes from a class

• A process to convert a class into a function

In the context of the provided example, what is the superclass of the `Employee` class?

• LightBulb

• Person

• SalariedEmployee

• HourlyPaidEmployee

Which of the following is a derived class in the given example?

• Person

• Employee

• LightBulb

• Method

What is the purpose of overriding a method in a subclass?

• To delete the method from the superclass

• To provide a more specific implementation of a method in the subclass

• To create a new class

• To change the class name

How can you call a method from the superclass if it has been overridden in the subclass?

• By using the `super` keyword

• By renaming the method

• By deleting the subclass method

• By using the `override` keyword

In the example, what additional attribute does the `Employee` class have compared to the `Person` class?

• Date of Birth

• National Insurance Number

• Salary

• Job Title

What is the relationship between `SalariedEmployee` and `Employee` in the example?

• `SalariedEmployee` is a superclass of `Employee`

• `SalariedEmployee` is a subclass of `Employee`

• They are unrelated

• They are the same class

Which method is used to set the name attribute in the `Person` class?

• `setName`

• `getName`

• `setAddress`

• `getAddress`

What does the `inherits` keyword do in the context of the example?

• It deletes a class

• It creates a new method

• It indicates that a class is inheriting from another class

• It changes the class name

In the example, how many methods does an `HourlyPaidEmployee` object have once instantiated?

• 2

• 4

• 6

• 8