Java Programming, Loose-leaf Version
8th Edition
ISBN: 9781337685917
Author: Joyce Farrell
Publisher: Cengage Learning
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Expert Solution & Answer
Chapter 4, Problem 5RQ
Program Description Answer
If the user declare a variable as an object within a class and he declared and use the same variable name within a method of the class, then within the method, “the variable used inside the method takes precedence”.
Hence, the correct option is “A”.
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A. Car Class
Create a Python Program where you write a class
named Car that has the following data attributes:
• _ _year_model (for the car's year model)
• __make (for the make of the car)
• _ _speed (for the car's current speed)
The Car class should have an _init_ method that
accepts the car's year model and make as arguments.
These values should be assigned to the object's
_year_model and
make data attributes. It should
also assign 0 to the __speed data attribute.
The class should also have the following methods:
accelerate()
The accelerate method should add 5 to the speed data
attribute each time it is called.
brake()
The brake method should subtract 5 from the speed
data attribute each time it is called.
• get_speed()
The get_speed method should return the current speed.
Next, design a program that creates a Car object then
calls the accelerate method five times. After each call
to the accelerate method, get the current speed of the
car and display it. Then call the brake method…
If we do not override the toString method in a class, the toString method for the Object is called. The default output is <class name>@<memory location>.
True
False
classname.py -> using "sys.argv"
● Create a program called classname.py. The program should define a class called person that has one method called hello, and one attribute called name, which represents the name of the person. ● The hello method should print the following string to the screen: ‘My name is ____ and I am a _____’ where: ○ The first blank should be the name attribute ○ The second blank should be the name of the class ○ The above blanks should NOT be manually printed (ex. print(‘My name is Greg and I am a person’)) ● After defining the class, there are three things you must do: 1. Instantiate an object of the class 2. Run the hello method of the instantiated object a. (e.g., Greg.hello()) 3. For grading purposes, you must also print the name of the class so I can be sure you’ve created a class a. (The expected output is )
Chapter 4 Solutions
Java Programming, Loose-leaf Version
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. 12PECh. 4 - Prob. 1GZCh. 4 - Prob. 2GZ
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