Starting Out with Java: From Control Structures through Objects (7th Edition) (What's New in Computer Science)
7th Edition
ISBN: 9780134802213
Author: Tony Gaddis
Publisher: PEARSON
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Textbook Question
Chapter 6, Problem 12PC
SavingsAccount Class
Design a SavingsAccount class that stores a savings account’s annual interest rate and balance. The class constructor should accept the amount of the savings account’s starting balance. The class should also have methods for subtracting the amount of a withdrawal, adding the amount of a deposit, and adding the amount of monthly interest to the balance. The monthly interest rate is the annual interest rate divided by twelve. To add the monthly interest to the balance, multiply the monthly interest rate by the balance, and add the result to the balance.
Test the class in a
- a. Ask the user for the amount deposited into the account during the month. Use the class method to add this amount to the account balance.
- b. Ask the user for the amount withdrawn from the account during the month. Use the class method to subtract this amount from the account balance.
- c. Use the class method to calculate the monthly interest.
After the last iteration, the program should display the ending balance, the total amount of deposits, the total amount of withdrawals, and the total interest earned.
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7)Circle Class
Write a Circle class that has the following fields:
radius: a double
PI:a final double initialized with the value 3.14159
The class should have the following methods:
Constructor. Accepts the radius of the circles as an argument.
Constructor. A no-arg constructor that sets the radius field to 0.0.
setRadius. A mutator method for the radius field.
getRadius.An accessor method for the radius field.
area. Returns the area of the circle, which is calculated as area. Returns the area of the circles, which is calculated as area= PI * radius * radius
diameter. Returns the diameter of the cirlce, which is calculated as diameter = radius * 2
circumference. Returns the circumference of the circle, which is calculated as circumference = 2 * PI * radius
Write a program that demonstrates the Circle class by asking the user for the circles's radius, creating a Circle object, and then reporting the cirlce's area, diameter, and circumference.
A class may have several constructors and it is called __________.
Area of a rectangle = length * width Create a Class that calculates and prints out the area of a rectangle. Then write code that creates an object of this Class in which given the length and width, it calculates and prints out the area of a rectangle. Your output should look like this: Area of rectangle: 87
Chapter 6 Solutions
Starting Out with Java: From Control Structures through Objects (7th Edition) (What's New in Computer Science)
Ch. 6.1 - What does an object use its fields for?Ch. 6.1 - Prob. 6.2CPCh. 6.1 - How is a class like a blueprint?Ch. 6.1 - You have programs that create Scanner, Random, and...Ch. 6.1 - Prob. 6.5CPCh. 6.1 - What values do reference variables hold?Ch. 6.1 - Prob. 6.7CPCh. 6.2 - You hear someone make the following comment: A...Ch. 6.2 - Prob. 6.9CPCh. 6.2 - When a variable is said to reference an object,...
Ch. 6.2 - Prob. 6.11CPCh. 6.2 - Prob. 6.12CPCh. 6.2 - Prob. 6.13CPCh. 6.2 - Prob. 6.14CPCh. 6.2 - Prob. 6.15CPCh. 6.2 - What is a stale data item?Ch. 6.3 - Assume that r1 and r2 are variables that reference...Ch. 6.4 - How is a constructor named?Ch. 6.4 - What is a constructors return type?Ch. 6.4 - Prob. 6.20CPCh. 6.7 - Prob. 6.21CPCh. 6.7 - What is a methods signature?Ch. 6.7 - Look at the following class: public class...Ch. 6.7 - How many default constructors may a class have?Ch. 6.9 - Prob. 6.25CPCh. 6.9 - When designing an object-oriented application, who...Ch. 6.9 - How do you identify the potential classes in a...Ch. 6.9 - What are a classs responsibilities?Ch. 6.9 - What two questions should you ask to determine a...Ch. 6.9 - Will all of a classs actions always be directly...Ch. 6 - This is a collection of programming statements...Ch. 6 - A class is analogous to a(n) _______. a. house b....Ch. 6 - An object is a(n) ________. a. blueprint b....Ch. 6 - This is a class member that holds data. a. method...Ch. 6 - This key word causes an object to be created in...Ch. 6 - This is a method that gets a value from a classs...Ch. 6 - This is a method that stores a value in a field or...Ch. 6 - When the value of an item is dependent on other...Ch. 6 - This is a method that is automatically called when...Ch. 6 - When a local variable has the same name as a...Ch. 6 - This is automatically provided for a class if you...Ch. 6 - Prob. 12MCCh. 6 - Prob. 13MCCh. 6 - A classs responsibilities are __________. a. the...Ch. 6 - True or False: The new operator creates an...Ch. 6 - True or False: Each instance of a class has its...Ch. 6 - True or False: When you write a constructor for a...Ch. 6 - True or False: A class may not have more than one...Ch. 6 - True or False: To find the classes needed for an...Ch. 6 - Find the error in the following class: public...Ch. 6 - Prob. 2FTECh. 6 - The following statement attempts to create a...Ch. 6 - Find the error in the following class: public...Ch. 6 - Find the error in the following class: public...Ch. 6 - Design a class named Pet, which should have the...Ch. 6 - Look at the following partial class definition,...Ch. 6 - Consider the following class declaration: public...Ch. 6 - Look at the following description of a problem...Ch. 6 - The bank offers the following types of accounts to...Ch. 6 - Assume that you are writing an application that...Ch. 6 - What is the difference between a class and an...Ch. 6 - A contractor uses a blueprint to build a set of...Ch. 6 - What is an accessor method? What is a mutator...Ch. 6 - is it a good idea to make fields private? Why or...Ch. 6 - If a class has a private field, what has access to...Ch. 6 - Prob. 6SACh. 6 - Assume a program named MailList.java is stored in...Ch. 6 - Why are constructors useful for performing...Ch. 6 - Under what circumstances does Java automatically...Ch. 6 - What do you call a constructor that accepts no...Ch. 6 - Prob. 11SACh. 6 - How does method overloading improve the usefulness...Ch. 6 - Employee Class Write a class named Employee that...Ch. 6 - Car Class Write a class named Car that has the...Ch. 6 - Personal Information Class Design a class that...Ch. 6 - Retail Item Class Write a class named RetailItem...Ch. 6 - Payroll Class Design a Payroll class that has...Ch. 6 - TestScores Class Design a TestScores class that...Ch. 6 - Circle Class Write a Circle class that has the...Ch. 6 - Temperature Class Write a Temperature class that...Ch. 6 - Days in a Month Write a class named MonthDays, The...Ch. 6 - A Game of Twenty-One For this assignment, you will...Ch. 6 - Freezing and Boiling Points The following table...Ch. 6 - SavingsAccount Class Design a SavingsAccount class...Ch. 6 - Deposit and Withdrawal Files Use Notepad or...Ch. 6 - Patient Charges Write a class named Patient that...Ch. 6 - Dice Game Write a program that uses the Die class...Ch. 6 - Roulette Wheel Colors On a roulette wheel, the...Ch. 6 - Coin Toss Simulator Write a class named Coin. The...Ch. 6 - Tossing Coins for a Dollar For this assignment you...Ch. 6 - Fishing Game Simulation For this assignment, you...
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