Which of the following is true about abstract classes? Abstract classes do not allow developers to provide a contract to the users of the class. An abstract class contains abstract methods Abstract classes cannot contain non-abstract methods or attributes. Subclasses of an abstract class do not need to follow an "is-a" relationship.

Computer Networking: A Top-Down Approach (7th Edition)
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Author:James Kurose, Keith Ross
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Chapter1: Computer Networks And The Internet
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Which of the following is true about abstract
classes?
Abstract classes do not allow developers to
provide a contract to the users of the class.
An abstract class contains abstract methods
Abstract classes cannot contain non-abstract
methods or attributes.
Subclasses of an abstract class do not need to
follow an "is-a" relationship.
Transcribed Image Text:Which of the following is true about abstract classes? Abstract classes do not allow developers to provide a contract to the users of the class. An abstract class contains abstract methods Abstract classes cannot contain non-abstract methods or attributes. Subclasses of an abstract class do not need to follow an "is-a" relationship.
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