EBK C HOW TO PROGRAM
8th Edition
ISBN: 9780133964639
Author: Deitel
Publisher: PEARSON CUSTOM PUB.(CONSIGNMENT)
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Textbook Question
Chapter 19, Problem 19.8E
(Quadrilateral Inheritance Hierarchy) Draw an inheritance hierarchy for classes Quadrilateral, Trapezoid, Parallelogram, Rectangle and Square. Use Quadrilateral as the base class of the hierarchy. Make the hierarchy as deep as possible.
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(Composition as an Alternative to Inheritance) Many programs written with inheritancecould be written with composition instead, and vice versa. Rewrite class BasePlusCommissionEmployee of the CommissionEmployee–BasePlusCommissionEmployee hierarchy to use compositionrather than inheritance. After you do this, assess the relative merits of the two approaches for designing classes CommissionEmployee and BasePlusCommissionEmployee, as well as for object-oriented programs in general. Which approach is more natural? Why?
(The Time class)
Design a class named Time.
The class contains:
- The data fields hour, minute, and second that represent a time.
- A no-arg constructor that creates a Time object for the current time. (The values of the data fields
will represent the current time.)
-A constructor that constructs a Time object with a specified elapsed time since midnight, January
1, 1970, in milliseconds. (The values of the data fields will represent this time.)
-A constructor that constructs a Time object with the specified hour, minute, and second.
- Three getter methods for the data fields hour, minute, and second, respectively.
-A method named setTime (long elapseTime) that sets a new time for the object using the
elapsed time. For example, if the elapsed time is 555550000 milliseconds, the hour is 10, the
minute is 19, and the second is 10.
Draw the UML diagram for the class and then implement the class.
Write a test program that creates two Time objects (using new Time (), new Time(555550000),…
(Java)
Question 5
Explain the answer step-by-step and include verbal explanation. Thank you!
Write an interface as follows:
The interface is named ServiceReminder
It has one method named timeForService that has no parameters and returns a boolean variable.
Now, update the below class so that is inherits from ServiceReminder
Note that the next service date should be 90 days from the last service
public abstract class Car { private double gasGauge; private double currMileage; private String color; private String make; private String model; private int daysLastService; public Car(String color, String make, String model, int daysLastService) { this.color = color; this.make = make; this.model = model; gasGauge = 0.0; currMileage = 0.0; this.daysLastService = daysLastService; } @Override public String toString() { return "Make: " + make + "\nModel: " + model + "\nColor: " + color…
Chapter 19 Solutions
EBK C HOW TO PROGRAM
Ch. 19 - Prob. 19.3ECh. 19 - (Inheritance Advantage) Discuss the ways in which...Ch. 19 - (Protected vs. Private Base Classes) Some...Ch. 19 - (Student Inheritance Hierarchy) Draw an...Ch. 19 - Prob. 19.7ECh. 19 - (Quadrilateral Inheritance Hierarchy) Draw an...Ch. 19 - 19.9 (Package Inheritance Hierarchy)...Ch. 19 - (Account Inheritance Hierarchy) Create an...
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