How many properties (attributes) does the following class have widget weight : double color : int + Widget (): + Widget (double, int) : + getWeight0 : double + getColor () : int + setweight(double) : void + setColor (int) : void + displayInfo() : void Seloct

How many properties (attributes) does the following class have widget weight : double color : int + Widget (): + Widget (double, int) : + getWeight0 : double + getColor () : int + setweight(double) : void + setColor (int) : void + displayInfo() : void Seloct

EBK JAVA PROGRAMMING

9th Edition

ISBN:9781337671385

Author:FARRELL

Publisher:FARRELL

Chapter11: Advanced Inheritance Concepts

Section: Chapter Questions

Problem 10PE

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How many constructors does the following class have? widget weight: double - color: int + Widget(): + Widget (double, int) : + getWeight(): double +getColor() : int + setWeight (double): void + setColor (int) : void + displayInfo() : void
How many constructors does the following class have? ns widget weight : double color : int + Widget () : +Widget (double, int): + getWeight0 : double + getColor () : int + setWeight(double) : void + setcolor (int) : void + displayInfo() void Select one O A. 0 О в. 1 О с.2 O D. Cannot tell from the given information
public class StairViewer public static void main(String(] args) // Step 2: Create a rectangle and draw it as the // top step of the stair // location: (20, 10) // size: (20, 20) 18 // Step 3: Create a rectangle and draw it as the 19 // middle step of the stair 20 // location: below the top step, aligned on left // size: (40, 20) 21 22 23 24 // Step 4: Create a rectangle and draw it as the 25 // bottom step of the stair 26 // location: below the middle step, aligned on left // size: (60, 20) 27 28 29 30 } 31 32
public class DesertEvent { private static int eventCount = 0; private String barCode; private String location; private String eventName; private String eventType; private int quantity; private int capacity; private int seatsTaken; public DesertEvent(String eventName, String eventType) { this(eventName, eventType, 0); calcMaximumSeats(eventType); generateBarCode(); } public DesertEvent(String eventName, String eventType, int capacity) { this.eventName = eventName; this.eventType = eventType; this.capacity = capacity; generateBarCode(); eventCount++; } public String getBarCode() { return barCode; } public String getLocation() { return location; } public String getEventName() { return eventName; } public String getEventType() { return eventType; } public int getQuantity() { return quantity; } public void setQuantity(int quantity) { this.quantity = quantity; } public int getCapacity() { return capacity; } public void setCapacity(int capacity) { this.capacity = capacity;…
public class DesertEvent { private static int eventCount = 0; private String barCode; private String location; private String eventName; private String eventType; private int quantity; private int capacity; private int seatsTaken; public DesertEvent(String eventName, String eventType) { this(eventName, eventType, 0); calcMaximumSeats(eventType); generateBarCode(); } public DesertEvent(String eventName, String eventType, int capacity) { this.eventName = eventName; this.eventType = eventType; this.capacity = capacity; generateBarCode(); eventCount++; } public String getBarCode() { return barCode; } public String getLocation() { return location; } public String getEventName() { return eventName; } public String getEventType() { return eventType; } public int getQuantity() { return quantity; } public void setQuantity(int quantity) { this.quantity = quantity; } public int getCapacity() { return capacity; } public void setCapacity(int capacity) { this.capacity = capacity;…
Rectangle Object Monitoring Create a Rectangle class that can compute the total area of all the created rectangle objects using static fields (variables). Remember that a Rectangle has two attributes: Length and Width. Implement the class by creating a computer program that will ask the user about three rectangle dimensions. The program should be able to display the total area of the three rectangle objects. For this exercise, you are required to apply all OOP concepts that you learned in class. Sample output: Enter Length R1: 1 Enter Width R1: 1 Enter Length R2: 2 Enter Width R2: 2 Enter Length R3: 3 Enter Width R3: 3 The total area of the rectangles is 14.00 Note: All characters in boldface are user inputs.
A class which is called Book consists of: Instance Variable bTitle (String): book title authors [] (String): names of authors bType (String): type of book p_year (int): year of publishing copy (int): count of available copy. Methods laonBook(): loan a copy of book retBook(): retrieve the book. checkCopy(): check number of book. displaylnfo: display book information (book title, authors, copy). Main Class which is called Library that have a screen contains a selective options (1...6), to perfume below tasks: 1- Adding books (allows to add n books accounts). 2- Loan Book 3- Retrieve Book 4- Check Copy: check the copies of books. 5- Display book information in the library. 6- Exit. Notes: A. Loan a book requires check the book copy, in case no available copy the program must show a message. B. Displaying books information in the library as per below example: S. Book Title Authors Ali Mohamed, Ahmed Ali Saad Mustafa Copies 20 1 Java OOP Probability 100
The following problem is based on a problem in a number of Java texts, including Gaddiss': Write a Temperature class that will hold a temperature in Fahrenheit and provides methods to get and display the temperature in Fahrenheit, Celsius, and Kelvin. The Temperature class should have the following instance variable: ftemp - A double that holds a Fahrenheit temperature. The Temperature class should have the following methods: ReadInput - Uses a Scanner method to populate ftemp with double value. getFahrenheit - Returns the value of the ftemp field, as a Fahrenheit temperature. getCelsius - Returns the value of the ftemp field converted to Celsius. getKelvin - Returns the value of the ftemp field converted to Kelvin. DisplayOutput - The Fahrenheit temperature and the equivalent values in Celsius and Kelvin are gotten and displayed, one per line, and each along with an appropriate message. Use the following formula to convert the Fahrenheit temperature to Celsius: Celsius = 5.0/9.0 *…
Implement the following classes: Polygon numSide: int /* constructor */ /* accessor-mutator */ + area (): double + perimeter (): double Triangle sideA: double sideB: double sidec: double /* constructor */ /* accessor-mutator */ + area () : double + perimeter (): double Create an object for Triangle class and invoke area and perimeter method. Input Format Take triangle sides (sideA,sideB,sideC) as input from user. Constraints For Triangle, sideB+sideC > sideA
Create a RightTriangle class given the following design: RightTriangle variables: base, height methods: 2 constructors, 1 that set default values and another that accepts to parameters. setBase - changes the base. Requires one parameter for base. setHeight - changes the height. Requires one parameter for height. getBase - returns the triangle base. getHeight - returns the triangle height. area - returns the area of the triangle (1/2bh) given the current base and height
Purpose To review interfaces Directions Your task for this lab is to implement and test a class to store ratings of items. Your Rating class should have the following fields and methods: private double sumOfRatings - the sum of all of the ratings private int raters - the number of people who have rated an item public Rating () initialize both fields to zero public Rating (double sumofRatings, int raters) - initialize the fields to the parameter values public void addRating (double newRating) - increase the sumOfRatings by newRating and increase the number of raters by one public double getAverageRating () return the average rating; if there are no raters so far, return 0.0 public String toString() - display the average rating and how many reviews it is based on; for example, if the sum of the ratings is 32 and that is based on ratings from ten people, the toString method will return "3.2 based on 10 reviews"
Computer Graphics Mickey Mouse In this labwork are asked to write a GUI application using AWT. It is highly advised that you build your work and knowledge upon the last labwork. You can watch the small video demo on WebOnline to get a better understanding. In additional to what we did in Lab3 you are going to; • Add a control panel. • Add two buttons to the panel called "Smaller" and "Bigger". • Menubar of this program should have an item called "Set Default"which will reset the values of x, y, dx and dy to the values they had initially. • Modify the action listener according to the buttons and menu item. • Set the title to "Mickey" in the constructor and add your WindowListener. • Modify your paint method to draw 3 ovals which makes up Mickey Mouse silhouette. Smaller ovals have half the radius of the big oval. • The center of the circle is determined by the variables x and y, and the radius of circles should be dependent on dx and dy (which are equal since we are using circles). •…