Java: An Introduction to Problem Solving and Programming (8th Edition)
8th Edition
ISBN: 9780134462035
Author: Walter Savitch
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Videos
Textbook Question
Chapter 6.2, Problem 21STQ
Define a class CircleCalculator that hat only two methods, getArea and getCircumference. These methods return the area and circumference, respectively of a circle, given its radius Both methods are static Do not define your own value for pi.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Write a method toString() for the Cow class which displays information
about a Cow object. The method should consider the following:
• If the Cow's stomach value is 100, the output should say that the Cow
is full
• If the Cow's stomach value is below 100 but above 50, no information
about the Cow's stomach should be given
• If the Cow's stomach value is below 50 but above 10, the output
should mention that the cow is hungry
• If the Cow's stomach value is below 10, the output should mention
that the cow is starving.
Example output:
First Cow is full.
Second Cow
Third Cow is hungry.
Fourth Cow is starving!
Design an application that does the following: A Solid can be a FlatSurfaceSolid or a CurvedSurfaceSolid. Every solid will have a volume. The method volume will be polymorphic. A solid has faces, vertices and edges. A flat-surface solid also has a variable called side which represents the length of the side. A curved-surface solid also has a radius. A Cube is a FlatSurfaceSolid. A cube has 6 faces, 8 vertices and 12 edges. It will have a side. A Sphere is a CurvedSurfaceSolid. It has 1 face, 0 vertices and 0 edges. It will have a radius. Create an ArrayList of solids (driver file named YourLastNameCISC231Q1.java). The arraylist will have 4 elements – 2 cubes (one with side length 3 and another will side length 4) and 2 spheres (one with radius 3 and another with radius 4). Create a driver class to instantiate an array of solids and display the details of each solid along with the volume of each solid.
//Todo write test cases for SimpleCalculator Class
// No need to implement the actual Calculator class just write Test cases as per TDD.
// you need to just write test cases no mocking // test should cover all methods from calculator and all scenarios, so a minimum of 5 test
// 1 for add, 1 for subtract, 1 for multiply, 2 for divide (1 for normal division, 1 for division by 0)
// make sure all these test cases fail
public class CalculatorTest {
//Declare variable here
private Calculator calculator;
//Add before each here
//write test cases here
}
Chapter 6 Solutions
Java: An Introduction to Problem Solving and Programming (8th Edition)
Ch. 6.1 - If a class is named Student, what name can you use...Ch. 6.1 - When defining a constructor, what do you specify...Ch. 6.1 - What is a default constructor?Ch. 6.1 - Does every class in Java automatically have a...Ch. 6.1 - In the program PetDemo shown in Listing 6 2, you...Ch. 6.2 - Prob. 6STQCh. 6.2 - Can a class contain both instance variables and...Ch. 6.2 - Can you reference a static variable by name within...Ch. 6.2 - Can you reference an instance variable by name...Ch. 6.2 - Can you reference a static variable by name within...
Ch. 6.2 - Can you reference an instance variable by name...Ch. 6.2 - Is the following valid, given the class...Ch. 6.2 - Prob. 13STQCh. 6.2 - Prob. 14STQCh. 6.2 - Prob. 15STQCh. 6.2 - Is the following valid, given the class...Ch. 6.2 - What values are returned by each of the following?...Ch. 6.2 - Suppose that speed is a variable of type double...Ch. 6.2 - Repeat the previous question, but instead assign...Ch. 6.2 - Suppose that nl is of type int and n2 is of type...Ch. 6.2 - Define a class CircleCalculator that hat only two...Ch. 6.2 - Which of the following statements are legal?...Ch. 6.2 - Write a Java expression to convert the number in...Ch. 6.2 - Consider the variable 5 of type String that...Ch. 6.2 - Repeat the previous question, but accommodate a...Ch. 6.2 - Write Java code to display the largest and...Ch. 6.3 - Prob. 27STQCh. 6.3 - Consider the variable allCents in the method...Ch. 6.3 - What is wrong with a program that starts as...Ch. 6.3 - Prob. 30STQCh. 6.3 - In your definition of the class OutputFormat. In...Ch. 6.4 - Prob. 32STQCh. 6.4 - Prob. 33STQCh. 6.4 - Prob. 34STQCh. 6.4 - Consider the class Species in Listing 5.19 of...Ch. 6.4 - Repeat the previous question for a method...Ch. 6.4 - Still considering the class Species in Listing...Ch. 6.4 - Rewrite the method add in Listing 6.16 so that it...Ch. 6.4 - In Listing 6.16, the set method that has a String...Ch. 6.5 - Give the definitions of three accessor methods...Ch. 6.6 - If cardSuit is an instance of Suit and is assigned...Ch. 6.7 - Suppose you want to use classes in the package...Ch. 6.7 - Prob. 43STQCh. 6.7 - Can a package have any name you might want, or are...Ch. 6.7 - On your system, place the class Pet (Listing 6.1)...Ch. 6.8 - The previous section showed you how to change the...Ch. 6 - Prob. 1ECh. 6 - Prob. 2ECh. 6 - Write a default constructor and a second...Ch. 6 - Write a constructor for the class...Ch. 6 - Consider a class characteristic that will be used...Ch. 6 - Create a class RoomOccupancy that can be used to...Ch. 6 - Write a program that tests the class RoomOccupancy...Ch. 6 - Sometimes we would like a class that has just a...Ch. 6 - Create a program that tests the class Merlin...Ch. 6 - In the previous chapter, Self-Test Question 16...Ch. 6 - Create a class Android whose objects have unique...Ch. 6 - Prob. 12ECh. 6 - Modify the definition of the class Species in...Ch. 6 - Prob. 2PCh. 6 - Using the class Pet from Listing 6.1, write a...Ch. 6 - Do Practice Program 4 from Chapter 5 except define...Ch. 6 - The following class displays a disclaimer every...Ch. 6 - Do Practice Program 5 from Chapter 5 but add a...Ch. 6 - We can improve the Beer class from the previous...Ch. 6 - Define a utility class for displaying values of...Ch. 6 - Write a new class TruncatedDollarFormat that is...Ch. 6 - Complete and fully test the class Time that...Ch. 6 - Complete and fully test the class Characteristic...Ch. 6 - Write a Java enumeration LetterGrade that...Ch. 6 - Complete and fully test the class Per n that...Ch. 6 - Write a Temperature class that represents...Ch. 6 - Repeat Programming Project 8 of the previous...Ch. 6 - Write and fully test a class that represents...Ch. 6 - Write a program that will record the votes for one...Ch. 6 - Repeat Programming Project 10 from Chapter 5, but...Ch. 6 - Create a JavaFX application that displays a button...
Additional Engineering Textbook Solutions
Find more solutions based on key concepts
Write a single pseudocode statement that indicates each of the following: Display the message Enter two numbers...
C How to Program (8th Edition)
When a function is executing, what happens when the end of the function block is reached?
Starting Out with Python (3rd Edition)
Assume as known that the Vandermonde determinant V=|11...1r1r2...r3r12r22...rn2r1n1r2n1...rnn1| is nonzero if t...
Differential Equations: Computing and Modeling (5th Edition), Edwards, Penney & Calvis
Write nested if statements that perform the following tests: If amount 1 is greater than 10 and amount2 is less...
Starting Out with C++ from Control Structures to Objects (8th Edition)
Consider the following C program void fun (void) { int a, b, c; / defiinition.1 / . . . while (. . .) int b, c,...
Concepts Of Programming Languages
the method rollDice.
Java How To Program (Early Objects)
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.Similar questions
- The weight of an object can be described by two integers: pounds and ounces (where 16 ounces equals one pound). Class model is as follows: public class Weight { private int pounds; private int ounces; public Weight(int p, int o) ( pounds=p+o/16: ounces = 0% 16: } Implement a method called subtract, which subtracts one weight to another. i.e. Weight w1 = new Weight(10.5): Weight w2 = new Weight(5.7): Weight w3= w1.subtract(w2):arrow_forwardWrite a class that has three overloaded static methods for calculating the areas of the following geometric shapes: circles rectangles cylinders Here are the formulas for calculating the area of the shapes. Area of a circle: Area=πr2 where π is Math.PI and r is the circle’s radius Area of a rectangle: Area=Width×Length Area of a cylinder: Area=πr2hArea=πr2h where π is Math.PI, r is the radius of the cylinder’s base, and h is the cylinder’s height Because the three methods are to be overloaded, they should each have the same name, but different parameter lists. Demonstrate the class in a complete program.arrow_forwardJAVA HELP PLEASE! Write a class Rectangle that has only the following public methods (you can add other non-public methods if you think you need them): Write a constructor that creates a rectangle using the x, y coordinates of its lower left corner, its width and its height (the parameters must be in that order). Creating a rectangle with non-positive width or height should not be allowed; throw an IllegalArgumentException for those cases. The values of x and y are allowed to be negative. Write a method overlap(Rectangle other). This method should return true if this rectangle overlaps with other, false otherwise. Rectangles that touch each other are not considered to be overlapping. Write a method toString that returns a String. The string should be formatted exactly as:“x:2, y:3, w:4, h:5”without the quotation marks and replacing the numbers with the actual attribute values of the object. A class called Rectangle exists in Java already. You are not allowed to use this class in any…arrow_forward
- Modify the Date class below by adding a new method called nextDay() that increments the Date by 1 when called and returns a new Date object. This method should properly increment the Date across Month boundary (i.e from the last day of the month to the first day of the next month). //Date class declaration public class Date { private int month; // 1-12 private int day; // 1-31 based on month private int year; // any year private static final int [] daysPerMonth = {0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31}; //constructor: confirm proper value for month and day given the year public Date (int month, int day, int year) { //check if month in range if (month <=0 II month > 12) { throw new IllegalArgumentException( “month (“ + month + “) must be 1-12”); } //check if day in range for month if…arrow_forwardModify the Date class below by adding a new method called nextDay() that increments the Date by 1 when called and returns a new Date object. This method should properly increment the Date across Month boundary (i.e from the last day of the month to the first day of the next month). //Date class declaration public class Date { private int month; // 1-12 private int day; // 1-31 based on month private int year; // any year private static final int [] daysPerMonth = {0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31}; //constructor: confirm proper value for month and day given the year public Date (int month, int day, int year) { //check if month in range if (month <=0 II month > 12) { throw new IllegalArgumentException( “month (“ + month + “) must be 1-12”); } //check if day in range for month if…arrow_forwardJAVACreate a class called Quadratic for representing a one-variable quadratic expression of the form: ax2 + bx + c a,b and c here are the coefficients. The class should contain the following methods: * A constructor that accepts values for a, b, and c. * public double getA() * public double getB() * public double getC() * public double evaluate (int x) * will return the value of the expression at point x * public double discriminant() - that will return (b2 - 4ac) * public boolean isImaginaryRoots() - roots are imaginary if (b2 - 4ac) < 0 * public boolean isRealRoots() - roots are real if (b2 - 4ac) >= 0 // these methods can only be invoked if the roots are not imaginary * public float firstRoot() * public float secondRoot() * public boolean isPerfectSquare(); // If the first and second roots are equal * Try to override the toString methods * Write a sample main program that will work as shown below. Example output: coefficient a: 4 coefficient b: 4 coefficient c: 1…arrow_forward
- In java language Write a Rectangle class. A Rectangle has properties of width and length. You construct a Rectangle object by providing the width and length in that order. If no width and length are provided to the constructor, construct a Rectangle with width 0.0 and length 0.0. We want to be able to get and set both the width and the length independently. We also want to be able to ask for the area of the rectangle and the perimeter of the rectangle. What will the object need to remember? width and length - those are the instance variables. Rectangle class has these constructors : public Rectangle() - Constructs a new rectangle with width and length of 0.0. public Rectangle(double width, double length) - Constructs a new rectangle with the given width and length. Remember that the job of the constructor is to initialize the instance variables. It has these methods. public double getWidth() - Gets the width of this Rectangle public double getLength() - Gets the length of this…arrow_forwardThe weight of an object can be described by two integers: pounds and ounces (where 16 ounces equals one pound). Class model is as follows: public class Weight { private int pounds; private int ounces; public Weight(int p. int o) { else pounds = p + o/16: ounces = 0 % 16: } Implement a method called compareTo, which compares the weight of one object to another. i.e. Weight w1 = new Weight(10,5): Weight w2 = new Weight(5,7): if(w1.compareTo(w2) >0)arrow_forwardIn java language Write a Rectangle class. A Rectangle has properties of width and length. You construct a Rectangle object by providing the width and length in that order. If no width and length are provided to the constructor, construct a Rectangle with width 0.0 and length 0.0. We want to be able to get and set both the width and the length independently. We also want to be able to ask for the area of the rectangle and the perimeter of the rectangle. What will the object need to remember? width and length - those are the instance variables. Rectangle class has these constructors : public Rectangle() - Constructs a new rectangle with width and length of 0.0. public Rectangle(double width, double length) - Constructs a new rectangle with the given width and length. Remember that the job of the constructor is to initialize the instance variables. It has these methods. public double getWidth() - Gets the width of this Rectangle public double getLength() - Gets the length of this…arrow_forward
- Slide Type Slide • Exercise # 1: Define a class Point that represents a point in 2 – D plane. The point has x and y coordinates. Define the following: • A constructor to initialize the x, y coordinates. • A method translate(self, dx,dy) to translate the point object dx , and dy units in x and y directions, respectively. • A method distanceTo (self, point2) to return the distance between the point referenced by self and point2. • getX(self) to return the value of x coordinate. • getY(self) to return the value of y coordinate Test the above class by: • Creating 2 point objects; one with (3,5) as x,y coordinates; the second with (-10,30) as x,y coordinates. • Move the first point 5.5 units in x direction and -12.5 units in y direction using translate method • Find the distance between the 2 points in their current location using distance To method A Sample output resulting from running the above test class is shown below new coordinates of point1= (8.5 , -7.5) Coordinates of point 2 =…arrow_forwardIn Java Write a class definition for a Rectangle class that contains:• Two int fields, length and width.• Mutator and accessor methods for the length and width fields.• A Boolean method named isSquare that returns true if the rectangle’s lengthand width are the same and false otherwise.b) Write a class definition for a RectangleDriver class that contains a main methodthat acts as a driver for the Rectangle class of the previous problem. The main methodshould do this:• Construct a Rectangle object named rect.• Use the mutator methods to assign arbitrary values to rect’s length and widthfields.• Use the Boolean method to determine if rect is a square.-- If rect is a square, print “Square: ” and then the square’s dimensions.For example: Square: 4x4.-- If rect is not a square, print “Rectangle: ” and then the rectangle’sdimensions. For example: Rectangle: 6x13.• In printing the above messages, use the accessor methods to retrieve therectangle’s dimensionsarrow_forwardWrite an equals method for the Car class given here. Two Cars are equal if their Vehicle Identification Numbers (VIN) are the same. HINT: The String class has an equals method that can be called from the Car class equals method.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Database System ConceptsComputer ScienceISBN:9780078022159Author:Abraham Silberschatz Professor, Henry F. Korth, S. SudarshanPublisher:McGraw-Hill Education
Starting Out with Python (4th Edition)Computer ScienceISBN:9780134444321Author:Tony GaddisPublisher:PEARSON
Digital Fundamentals (11th Edition)Computer ScienceISBN:9780132737968Author:Thomas L. FloydPublisher:PEARSON
C How to Program (8th Edition)Computer ScienceISBN:9780133976892Author:Paul J. Deitel, Harvey DeitelPublisher:PEARSON
Database Systems: Design, Implementation, & Manag...Computer ScienceISBN:9781337627900Author:Carlos Coronel, Steven MorrisPublisher:Cengage Learning
Programmable Logic ControllersComputer ScienceISBN:9780073373843Author:Frank D. PetruzellaPublisher:McGraw-Hill Education
Database System Concepts
Computer Science
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:McGraw-Hill Education
Starting Out with Python (4th Edition)
Computer Science
ISBN:9780134444321
Author:Tony Gaddis
Publisher:PEARSON
Digital Fundamentals (11th Edition)
Computer Science
ISBN:9780132737968
Author:Thomas L. Floyd
Publisher:PEARSON
C How to Program (8th Edition)
Computer Science
ISBN:9780133976892
Author:Paul J. Deitel, Harvey Deitel
Publisher:PEARSON
Database Systems: Design, Implementation, & Manag...
Computer Science
ISBN:9781337627900
Author:Carlos Coronel, Steven Morris
Publisher:Cengage Learning
Programmable Logic Controllers
Computer Science
ISBN:9780073373843
Author:Frank D. Petruzella
Publisher:McGraw-Hill Education
6 Stages of UI Design; Author: DesignerUp;https://www.youtube.com/watch?v=_6Tl2_eM0DE;License: Standard Youtube License