15Which of the following is not possible?O A class that implements two interfaces.O A class that inherits from two classes.A class that inherits from one class, and implements an interface.O All of the above are possible.16rAl1136°C Haz

Answer: Class: Classes and Objects are the simple components of OOP's. Class are a blueprint or a…

15 Which of the following is not possible? O A class that implements two interfaces. O A class that inherits from two classes. class that inherits from one class, and implements an interface. All of the above are possible.

15 Which of the following is not possible? O A class that implements two interfaces. O A class that inherits from two classes. class that inherits from one class, and implements an interface. All of the above are possible.

Programming Logic & Design Comprehensive

9th Edition

ISBN:9781337669405

Author:FARRELL

Publisher:FARRELL

Chapter11: More Object-oriented Programming Concepts

Section: Chapter Questions

Problem 14RQ

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14. Which statements are true about the following code? (Choose all that apply) 1: interface HasVocalCords {2: public abstract void makeSound();3: }4: public interface CanBark extends HasVocalCords {5: public void bark();6: } A. The CanBark interface doesn’t compile.B. A class that implements HasVocalCords must override the makeSound() method.C. A class that implements CanBark inherits both the makeSound() and bark() methods.D. A class that implements CanBark only inherits the bark() method.E. An interface cannot extend another interface. Please explain this code abstract, extent and interface methods too in detail.
Exercise: Exercises Write a class named Octagon that extends GeometricObject and implements the Comparable and Cloneable interfaces. Assume all eight sides of the octagon are of equal length. The area can be computed using the following formula: The Octagon class has a private double data field named side with its getter and setter methods. The class has a no-arg constructor that creates an Octagon with side 0, and a constructor to create an Octagon with a specified side. Write a test program that creates an Octagon object with side value 5 and displays its area and perimeter. Create a new object using the clone method, and compare the two objects using the compareTo method. As far as classes go, the abstract GeometricObject class contains the abstract doubles getArea() and getPerimeter(). The programming language used in this exercise is Java, and it covers the Interfaces topic. I did get how most of the program should look like, but I'm facing trouble understanding a few…
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