EBK JAVA PROGRAMMING
9th Edition
ISBN: 9781337671385
Author: FARRELL
Publisher: CENGAGE LEARNING - CONSIGNMENT
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Chapter 4, Problem 9RQ
Program Description Answer
A constructor “can receive” parameters.
Hence, the correct option is “A”.
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You are required to build a mini FunTime application for the kids to play with their electronic toys in a virtual world. Follow the given steps
Build a class Toy having the following data members
Name(String)
Color (String)
Type (String)
Price (float)
batteryHealth (int)
Provide constructor with arguments for name, color, type, and price. Initialize batteryHealth to 5 (which means full).
Provide getter for each of these but no setters.Provide a function charge(String time). This function would increase the batteryHealth of the toy according to following rules
Time
Increase in battery health
15 mins
20% charging (Increase health by 1)
30 mins
40%
45 mins
60%
1 hour
80%
1 hour 15 mins
100%
If the toy is already fully charged, then no more charging should be done and appropriate message to be displayed. The charge function returns the new health of the battery of toy object.
Provide another function play() that reduces the batteryHealth of the toy…
Create a constructor named Exam that assigns "Good luck" to a previously declared String variable named
Consider the code and output below. Is Car more likely to be a struct or a class?
func test(prototype: Car) -> String { prototype.speed = 100 // Assume that speed is an Int variable prototype.saveDiagnostics() // Assume saveDiagnostics stores information about changes to the car state prototype.speed = 120 prototype.saveDiagnostics() prototype.speed = 200 prototype.saveDiagnostics()return prototype.GetDiagnostics() // Assume GetDiagnostics returns a diagnostics report}var myCar = Car(speed: 0)print("Speed before testing: \(myCar.speed)")var result = test(prototype: myCar)print("Speed after testing: \(myCar.speed)")
Screen output:
Speed before testing: 0Speed after testing: 0
1. Car is a class
2. Car is a struct
3. Car is neither a class nor a struct
Chapter 4 Solutions
EBK JAVA PROGRAMMING
Ch. 4 - Prob. 1RQCh. 4 - Prob. 2RQCh. 4 - Prob. 3RQCh. 4 - Prob. 4RQCh. 4 - Prob. 5RQCh. 4 - Prob. 6RQCh. 4 - Prob. 7RQCh. 4 - Prob. 8RQCh. 4 - Prob. 9RQCh. 4 - Prob. 10RQ
Ch. 4 - Prob. 11RQCh. 4 - Prob. 12RQCh. 4 - Prob. 13RQCh. 4 - Prob. 14RQCh. 4 - Prob. 15RQCh. 4 - Prob. 16RQCh. 4 - Prob. 17RQCh. 4 - Prob. 18RQCh. 4 - Prob. 19RQCh. 4 - Prob. 20RQCh. 4 - Prob. 1PECh. 4 - Prob. 2PECh. 4 - Prob. 3PECh. 4 - Prob. 4PECh. 4 - Prob. 5PECh. 4 - Prob. 6PECh. 4 - Prob. 7PECh. 4 - Prob. 8PECh. 4 - Prob. 9PECh. 4 - Prob. 10PECh. 4 - Prob. 11PECh. 4 - Prob. 1GZCh. 4 - Prob. 2GZ
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