MindTapV2.0 for Farrell's Java Programming with 2021 Updates, 9th Edition [Instant Access], 1 term
MindTapV2.0 for Farrell's Java Programming with 2021 Updates, 9th Edition [Instant Access], 1 term
9th Edition
ISBN: 9780357505540
Author: Farrell; Joyce
Publisher: Cengage Learning US
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Chapter 10, Problem 1RQ
Program Plan Intro

To find the correct option that can be used as a reliable way to find which class is a base class and which is a derived class.

Expert Solution & Answer
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Program Description Answer

b. try saying the two class names together.

Explanation of Solution

Explanation:

Classes can be derived from other classes in Java, as in other object-oriented programming languages. A subclass is called to be the derived class. The superclass is the class from which it is derived. The extended keyword in Java can be used to declare a class as a subclass of another class. Subclasses inherit variables and methods from their superclasses and can utilize them as if they were specified within the subclass.

A reliable way that will help to find which of the two classes is the base class and which is a subclass is by try saying the two class names together.

By saying the names of both base class and derived class, one should check which class is containing more generalized features and which is not. A class that contains more generalized features should be considered as the base class and the other one should be considered as the derived one.

For example: Consider two classes Birds and Pigeon. If we call the names of both, surely, the Birds class will contain more generalized features instead of the Pigeon class. So, the Birds class will be a base class and the Pigeon class will be the derived one.

Conclusion:

Therefore, the correct option is option b. try saying the two class names together.

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