Write an abstract class, it can be anything well defined from the very basics.
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Write an abstract class, it can be anything well defined from the very basics.
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- Abstract classes and interfaces can both be used to specify common behavior of objects.How do you decide whether to use an interface or an abstract class? Explain youranswer.Abstract classes and interfaces may be used interchangeably to specify the behavior of objects.How do you know whether you need an interface or an abstract class?In what scenarios would you choose to use an abstract class over an interface, and vice versa?
- All of the abstract methods that the parent class has defined must be implemented by any subclass. What do you think?All of the abstract methods of the parent class must be implemented by any subclass. Do you think it's right or wrong?What are the fundamental differences between an abstract classes and interface?
- What is an abstract class? Choose only one option.(a) An object(b) A class with no methods.(c) A class with no concrete subclasses.(d) A class with at least one undefined message.(e) An interface.A subclass of an abstract class must be able to do all of the things the parent class can do. True or not?Write a class named Person with data attributes for a person’s name, address, and telephone number. Next, write a class named Customer that is a subclass of the Person class. The Customer class should have a data attribute for a customer number and a Boolean data attribute indicating whether the customer wishes to be on a mailing list. Demonstratean instance of the Customer class in a simple program.