When should one use an abstract class, when should one use an interface, and when should one use both?
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When should one use an abstract class, when should one use an interface, and when should one use both?
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- Explain the difference between an interface and an abstract class.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.In what scenarios would you choose to use an abstract class over an interface, and vice versa?
- State a circumstance in which you would prefer an interface over an abstract class. Also, State a circumstance in which you would prefer an abstract class over an interface.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?How are interfaces different from abstract classes?
- Common object behavior can be expressed using interfaces or abstract classes.What elements should you take into account when choosing between using an interface and an abstract class?Explain why you think interfaces are better than abstract classes in your opinion.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.
- What are the most important differences that distinguish interfaces from abstract classes?Both abstract classes and interfaces may be used to specify the expected behavior of an object.What should be taken into account when deciding whether to utilize an interface or an abstract class?Please explain why you think interfaces are preferable than abstract classes.