Java Programming
8th Edition
ISBN: 9781305981829
Author: Joyce Farrell
Publisher: Cengage Limited
expand_more
expand_more
format_list_bulleted
Expert Solution & Answer
Chapter 4, Problem 15RQ
Program Description Answer
The “class variables” are variables which are shared by every instantiation of a class.
Hence, the correct option is “A”.
Expert Solution & Answer
Trending nowThis is a popular solution!
Students have asked these similar questions
A class that is not intended to be instantiated, but used only as a base class, is called a(n) __________. a. dummy class b. subclass c. virtual class d. abstract class
class SavingsAccount(object):
"""This class represents a savings account
with the owner's name, PIN, and balance."""
RATE = 0.02
def __init__(self, name, pin, balance = 0.0):
self._name = name
self._pin = pin
self._balance = balance
def __str__(self):
result = 'Name: ' + self._name + '\n'
result += 'PIN: ' + self._pin + '\n'
result += 'Balance: ' + str(self._balance)
return result
def getBalance(self):
return self._balance
def getName(self):
return self._name
def getPin(self):
return self._pin
def deposit(self, amount):
"""Deposits the given amount."""
self._balance += amount
return self._balance
def withdraw(self, amount):
"""Withdraws the given amount.
Returns None if successful, or an
error message if unsuccessful."""
if amount < 0:
return 'Amount must be >=…
Fill-in-the-Blank
__________ is the default behavior when an object is assigned the value of another object of the same class.
Chapter 4 Solutions
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. 12PECh. 4 - Prob. 1GZCh. 4 - Prob. 2GZ
Knowledge Booster
Similar questions
- __________ is the default behavior when an object is assigned the value of another object of the same class.arrow_forwardsolve in python Street ClassStep 1:• Create a class to store information about a street:• Instance variables should include:• the street name• the length of the street (in km)• the number of cars that travel the street per day• the condition of the street (“poor”, “fair”, or “good”).• Write a constructor (__init__), that takes four arguments corresponding tothe instance variables and creates one Street instance. Street ClassStep 2:• Add additional methods:• __str__• Should return a string with the Street information neatly-formatted, as in:Elm is 4.10 km long, sees 3000 cars per day, and is in poor condition.• compare:• This method should compare one Street to another, with the Street the method is calledon being compared to a second Street passed to a parameter.• Return True or False, indicating whether the first street needs repairs more urgently thanthe second.• Streets in “poor” condition need repairs more urgently than streets in “fair” condition, whichneed repairs more…arrow_forwardA class may have several constructors and it is called __________.arrow_forward
- Pyhton Code: Create a Pizza class which stores information about a single pizza. It contains the following: -Instance variables to store the size of the pizza (small, medium or large), (1)the number of cheese toppings, (2)the number of pepperoni toppings, and the (3) number of mushroom toppings. - Constructor: that takes four arguments and sets all of the corresponding instance variables and that initializes all instance variables to the zero of their type. - Methods to get (accessor) and set (mutator) each instance variable individually. - A method called calcCost() that returns the cost of the pizza. Pizza cost is determined by: Small: $10 + $2 per topping Medium: $12 + $2 per topping Large: $14 + $2 per topping. -A method which returns a string for the pizza size, quantity of each topping, and the pizza cost as calculated by the following example, a large pizza with 1 cheese, 2 pepperoni and 1 mushroom toppings should cost $22 (you can overwrite __str__).arrow_forwardThe __________ declares that a derived class is allowed to override a method. a. void keyword b. protected keyword c. base keyword d. virtual keywordarrow_forwardclass SavingsAccount(object): RATE = 0.02 def __init__(self, name, pin, balance = 0.0): self._name = name self._pin = pin self._balance = balance def __str__(self): result = 'Name: ' + self._name + '\n' result += 'PIN: ' + self._pin + '\n' result += 'Balance: ' + str(self._balance) return result def __eq__(self,a): if self._name == a._name and self._pin == a._pin and self._balance == a._balance: return True else: return False def __gt__(self,a): if self._balance > a._balance: return True else: return False def getBalance(self): return self._balance def getName(self): return self._name def getPin(self): return self._pin def deposit(self, amount): self._balance += amount return self._balance…arrow_forward
- Focus on classes, objects, methods and good programming styleYour task is to create a BankAccount class. Class name BankAccount Attributes __balance float float __pin integer integer Methods __init_()get_pin()check_pin()deposit()withdraw()get_balance() The bank account will be protected by a 4-digit pin number (i.e. between 1000 and 9999). The pin should be generated randomly when the account object is created. The initial balance should be 0.get_pin()should return the pin.check_pin(pin) should check the argument against the saved pin and return True if it matches, False if it does not.deposit(amount) should receive the amount as the argument, add the amount to the account and return the new balance.withraw(amount) should check if the amount can be withdrawn (not more than is in the account), If so, remove the argument amount from the account and return the new balance if the transaction was successful. Return False if it was not.get_balance()…arrow_forwardjava When we create an object of a class, the object's instance variables are automatically initialized with its default values without us writing code in any constructor. Choose one of the options:TrueFalsearrow_forwardOnly___________ data members of a class can be accessed by a derived class. a. Private and public b. Public and protected c. Private and protected d. Private, protected and publicarrow_forward
- Course Title: Modern Programming Language Please Java Language Code Question : Create a class called with your 18Arid2891, as Invoice18Arid2891, that a hardware store might use to represent an invoice for an item sold at the store. An Invoice should include four pieces of information as instance variables a part number (type String), a part description (type String),a quantity of the item being purchased (type int) and a price per item (double). Your class should have a constructor that initializes the four instance variables. Provide a set and a get method for each instance variable. In addition, provide a method named getInvoice Amount that calculates the invoice amount (i.e., multiplies the quantity by the price per item), then returns the amount as a double value. If the quantity is not positive, it should be set to 0. If the price per item is not positive, it should be set to 0.0. Write a test application named InvoiceTestMJibranAkram that demonstrates class Invoice’s…arrow_forwardPlease code in python Create a program with two classes – the person class and the student The person class has the following properties: first name (first_name), last name (last_name) street address (address) city (city) zip code (zip) The class has the following methods: get_full_name, which returns the full name of a person get_full_address, which return greeting, returns a greeting message. The class should provide accessor and mutator for each property The class should override the __str__ method to return the state of the object. Create a child class called student which has a property named graduation year (graduation_year) and major. Provide accessor and mutator for each property of its own It inherits all the properties and methods of the person parent class as well. Create a test program that Create an object of the person class and print the full name of a person. Create an object of the person class and print…arrow_forwardA constant object must be__________ ; it cannot be modified after it’s created.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
EBK JAVA PROGRAMMINGComputer ScienceISBN:9781337671385Author:FARRELLPublisher:CENGAGE LEARNING - CONSIGNMENT
EBK JAVA PROGRAMMING
Computer Science
ISBN:9781337671385
Author:FARRELL
Publisher:CENGAGE LEARNING - CONSIGNMENT