Write a class named PingPong that has a method next that alternates between printing 'PING' and 'PONG' as shown below. >>> ball - PingPong () >>> ball.next() PING >>> ball.next() PONG >>> ball.next() PING >>> ball.next() PONG

Write a class named PingPong that has a method next that alternates between printing 'PING' and 'PONG' as shown below. >>> ball - PingPong () >>> ball.next() PING >>> ball.next() PONG >>> ball.next() PING >>> ball.next() PONG

EBK JAVA PROGRAMMING

9th Edition

ISBN:9781337671385

Author:FARRELL

Publisher:FARRELL

Chapter10: Introduction To Inheritance

Section: Chapter Questions

Problem 6RQ

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hello This is in java Create a class called RoomCarpet that has three private instance variables – room lengthand width in foot (double) and carpet cost per square foot (double). Additionally, the classshould have:a. A constructor that takes room length, room width and carpet cost per square foot. Theconstructor sets the class variables to these values and in case any of these values isnegative, set its instance variable to zero.b. A mutator method (set) and an accessor method (get) for the carpet cost variable only.c. A method getArea that returns the area of the room. The area of the room iscomputed by multiplying the room's length by the room's width.d. A method getTotalCost that returns the total cost of the carpet. The total cost iscomputed by multiplying the room area by the carpet cost per square foot. Part (2)Write a Java application that asks the user to enter the length and width of a room and thecost per square foot of the carpeting. Create an object from RoomCarpet…
Write the source code of the class Passenger. A passenger can travel with an infant (i.e. his/her child). Code the class Infant as an inner class of the class Passenger. If a passenger is not travelling with an infant, the getInfantMonths method must return –1.
Write a class Point with instance variables as: xCoordinate(int) and yCoordinate(int). Write public instance methods (getters & setters) for each instance variable. Now, write a class Circle with private instance variables as radius and Pi (value is 3.14). Write public setter, getter for radius, Area method for calculating Area, Draw method for radius.  Formula for calculating area=pi*r^2  Formula for calculating radius= Math.sqrt (xCordinate^2+yCordinate^2) a. Extend a Circle class from Point class such as Class Circle extends Pointb. Write a Default constructor in Circle class that sets radius, xCoordinate & yCoordinate to some default value e.g. -1;c. Write a Parameterized constructor in Circle class which takes xCoordinate, yCoordinate and radius as a parameter.Now write a ColoredCirlce class with private instance variable as color (String) and public setter & getters. Extend the ColoredCircle from Circle and do the following operations.d. Write a default constructor…
Code in Java Define a class named MobilePhone with the attributes brand name, model, color and price. Define 3 constructors - the first one is the default constructor, the second one initializes all data members and the third one gives an initial value to the brand name Apple, model iPhone XR and price to 54250 while allowing color to be initialized by the user. Also, write a display method that prints in this manner: Brand: Samsung Model: S10 Color: Black Price: 53300.0 Write a method updatePrice that updates the price of the mobile phone. The method accepts a price. If the value of the price is negative the price must be deducted with the value. But if positive price must be added with the value. It will not allow update of price if will result to a negative value for price. For example: Test Result MobilePhone phone = new MobilePhone("Samsung", "S10", "Black", 53300.00); phone.display(); Brand: Samsung Model: S10 Color: Black Price: 53300.0…
In this exercise, you have to calculate the student's total marks using the concept of Classes Problem Statement# Write a Java class called Student with ● private fields: ○ name(String type) ○ mark1 and mark2 (double type) And methods: ● getMarks(int markNumber), a method which should return mark1 if markNumber equals 1 and mark2 otherwise. ● calcTotal() method should take the two marks entered and return their sum. Also define two constructors: ● A default constructor that takes no parameters and initializes the values to zeros and null. ● A constructor that takes the three variables and sets them as the values of the appropriate fields. Input# Name of the student and the marks obtained in the first and second tests Output# Sum of both marks Sample Input# Student student = new Student("Jack", 60, 70); Sample Output# getMarks(1) => 60 getMarks(2) => 70 calcTotal() => 130.0 Part of solution class Student { // Define private fields here public Student() { // Write…
Please write it in Java. Write a class named GasTank containing: An instance variable named amount of type double, initialized to 0. An instance variable named capacity of type double. A constructor that accepts a parameter of type double. The value of the parameter is used to initialize the value of capacity. A method named addGas that accepts a parameter of type double. The value of the amount instance variable is increased by the value of the parameter. However, if the value of amount is increased beyond the value of capacity, amount is set to capacity. A method named useGas that accepts a parameter of type double. The value of the amount instance variable is decreased by the value of the parameter. However, if the value of amount is decreased below 0, amount is set to 0. A method named isEmpty that accepts no parameters. isEmpty returns a boolean value: true if the value of amount is less than 0.1, and false otherwise. A method named isFull that accepts no parameters. isFull…
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Create a new class called Dog that is derived from the Pet class given in Listing 6.1 of Chapter 6. The new class has the additional attributes of breed (type String) and boosterShot (type boolean), which is true if the pet has had its booster shot and false if not. Give your classes a reasonable complement of constructors and accessor methods. Write a driver program to test all your methods, then write a program that reads in five pets of type Dog and displays the name and breed of all dogs that are over two years old and have not had their booster shots.
Suppose sam is an object of a class named Person and suppose increaseAgeis a method for the class Person that takes one argument that is an integer.How do you write an invocation of the method increaseAge using sam asthe calling object and using the argument 10? The method increaseAge willchange the data in sam so that it simulates sam aging by 10 years.
Please in pyth coding with correct indentation 4a) Given that you have a Liquid class that can be initialized with any amount of gallons, liters, ounces, etc, write the first line of the method that will allow you to add together two Liquid objects using operator overloading. Again, write ONLY the first line (method definition) – you do NOT have to write the entire method. 4b) Given that you have L1 and L2 which are instances of the Liquid class, write a line of code that uses operator overloading to add them together and assign the result to L3.
I tried to get this answered before but I couldn't get the code to work fully from what he gave me. " //Definition of class rectangle public class Rectangle { //Declare required variables private double w; private double h; //No-argument constructor public Rectangle() { //Assign "w" to "1" w = 1; //Assign "h" to "1" h = 1; } //Parameterized constructor public Rectangle(double wid, double ht) { //Assign "wid" to "w" this.w = wid; //Assign "ht" to "w" this.h = ht; } //Method definition for width public double getWidth() { //Return width return w; } //Method definition for height public double getHeight() { //Return height return h; } //Method definition for perimeter public double getPerimeter() { //Return the perimeter return 2.0*(w + h); } //Method definition for area public double getArea() { //Return the area return w*h; } }//Definition of test class public class Test { //Definition of main class public static void main(String[] args) { //Create an object for rectangle class…
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