Create a RobotFriend class. RobotFriend is a new toy just on the market. Copy the starter class and the tester from Codecheck. A RobotFriend has a name and replies to various commands Provide a constructor that takes the name of the RobotFriend as a parameter. Remember that a constructor has the same name as the class. What does the class need to remember? That is the instance variable. Provide the following methods: public String getName() gets the name of this RobotFriend public void setName(String newName) sets a new name for this RobotFriend public String whatDoYouNeed() returns a string consisting of name + " needs a battery charge" where name is the name of this RobotFriend (which was supplied in the constructor) public String doCommand(String whatToDo) returns a string consisting of "Your friend " + name + " does not " + whatToDo where name is the name of this RobotFriend and whatToDo is the parameter

Create a RobotFriend class. RobotFriend is a new toy just on the market. Copy the starter class and the tester from Codecheck. A RobotFriend has a name and replies to various commands Provide a constructor that takes the name of the RobotFriend as a parameter. Remember that a constructor has the same name as the class. What does the class need to remember? That is the instance variable. Provide the following methods: public String getName() gets the name of this RobotFriend public void setName(String newName) sets a new name for this RobotFriend public String whatDoYouNeed() returns a string consisting of name + " needs a battery charge" where name is the name of this RobotFriend (which was supplied in the constructor) public String doCommand(String whatToDo) returns a string consisting of "Your friend " + name + " does not " + whatToDo where name is the name of this RobotFriend and whatToDo is the parameter

Programming Logic & Design Comprehensive

9th Edition

ISBN:9781337669405

Author:FARRELL

Publisher:FARRELL

Chapter10: Object-oriented Programming

Section: Chapter Questions

Problem 19RQ

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PLEASE ENSURE TO USE THE FRAMEWORK PROVIDED IN THE IMAGES, AND THAT IT WORKS WITH THE TESTER CLASS. Write a class RangeInput that allows users to enter a value within a range of values that is provided in the constructor. An example would be a temperature control switch in a car that allows inputs between 60 and 80 degrees Fahrenheit. The input control has “up” and “down” buttons. Provide up and down methods to change the current value. The initial value is the midpoint between the limits. As with the preceding exercises, use Math.min and Math.max to limit the value. Write a sample program that simulates clicks on controls for the passenger and driver seats.
Create a PhoneListing class that uses the Name class for one of its instance variables. Remember the instance data in the Name class is private to the class and must be accessed through its methods.Add additional instance variables to the PhoneListing class for the phone number. The phone number should be broken down into three parts, area code, city code, and local code.Create all appropriate methods for the new class, including the following three methods: equals(PhoneListing):boolean, an equality of state method that returns true if the objects contain the same name and phone number. compareTo(PhoneListing):int, a comparison method that returns -1 if the calling PhoneListing object should precede the argument PhoneListing object, 1 if the calling PhoneListing object should come after the argument PhoneListing object, and a 0 if they are equal. Use last, first, middle, phone number as the ordering values. example:Adams, Alex, Henry, (609)473-2101 Adams, George, Henry, (509)373-1101…
Write a new snowflake class that extends AbstractShape. Your snowflake should be a unique and simple shape unlike any other student’s. Use the drawing methods provided in the imported Graphics class The SimpleSnowFlake is provided in the project as an additional reference. Add an equals(Object o) method that will compare unique instance variable data and return true if two of your snowflakes are the same. Your equals method should override the method from the Object class and call the equals method of AbstractShape Your snowflake should be a different color and move in a different and unique way.
For this project you will have to write two classes.Class Rectangle is a class that represents an axis-aligned rectangle. ClassRectangleTester is the driver class, used to test the Rectangle class.Class Rectangle:An instance of the class Rectangle represents a valid axis-aligned rectangle. It has severalinstance variables that one needs to use to describe a rectangle, as well as methods thatoperate on these variables.Rectangle instance variables:Class Rectangle will have the following instance variables:• x – a double that represents the x coordinate of the lower left vertex of therectangle• y – a double that represents the y coordinate of the lower left vertex of therectangle• width – a double that represents the width of the rectangle• height – a double that represents the height of the rectangle• color – a String that represents the color of the rectangleFor the rectangle to be valid, the coordinates of all vertices must be between 0 and 1inclusive. The color can be one of the…
Create three more classes that inherit from Crew. Unless noted otherwise, each of these classes has the same instance variables as Crew, so don’t override the __init__ method. Engineer(Crew): The only method that should be overridden in the Engineer class is the repair method. repair(self, ship) takes in self and a Starship object, and represents an attempt by the Engineer to repair a section of the ship. If the engineer’s current location is damaged (that is, ship.damaged for the location is True), then the value for that key should be changed to False, and a message should print out of the form: <Name> fixed the damage to <Location>. If the engineer’s current location is NOT damaged, then instead the method should print a message of the form: <Location> isn’t damaged. Captain(Crew): The only method that should be overridden in the Captain class is the fire_lasers method. This method represents an attempt by the captain to fire lasers…
Create three more classes that inherit from Crew. Unless noted otherwise, each of these classes has the same instance variables as Crew, so don’t override the __init__ method. Engineer(Crew): The only method that should be overridden in the Engineer class is the repair method. repair(self, ship) takes in self and a Starship object, and represents an attempt by the Engineer to repair a section of the ship. If the engineer’s current location is damaged (that is, ship.damaged for the location is True), then the value for that key should be changed to False, and a message should print out of the form: <Name> fixed the damage to <Location>. If the engineer’s current location is NOT damaged, then instead the method should print a message of the form: <Location> isn’t damaged. Captain(Crew): The only method that should be overridden in the Captain class is the fire_lasers method. This method represents an attempt by the captain to fire lasers at…
Write a full class that represents a Phone, described by a name, price, and then whether the phone comes enabled with Bluetooth. The default value is that most phones come enabled. Include instance data, one or more constructors, getters and setters, a toString, and an equals method. Required validation for the variables Implement the Comparable interface. Order phones based on name and then price. Show make the driver in a different class to test the methods using user-input
Implement a class Car with the following properties. A car has a certain fuel efficiency(measured in miles/gallon or liters/km—pick one) and a certain amount of fuel in the gastank. The efficiency is specified in the constructor, and the initial fuel level is 0.Supply a method drive that simulates driving the car for a certain distance, reducing theamount of gasoline in the fuel tank. Also supply methods getGasInTank, returning thecurrent amount of gasoline in the fuel tank, and addGas, to add gasoline to the fuel tank.Sample usage:Car myHybrid = new Car(50); // 50 miles per gallonmyHybrid.addGas(20); // Tank 20 gallonsmyHybrid.drive(100); // Drive 100 milesdouble gasLeft = myHybrid.getGasInTank(); // Get gas remaining in tankYou may assume that the drive method is never called with a distance that consumes morethan the available gas. Supply a CarTester class that tests all methods.
In this exercise, you are going to build on your Circleclass from the previous exercise. You are going to add 2 method, areaDifference and perimeterDifference. Both methods take a doubleradius of a second circle and return the difference from the current circle. For example, if you create a Circle object with a radius of 4 and call areaDifference(3), you will return the diffence between the area of a circle with radius 4 and the area of a circle with a radius of 3. perimeterDifferencewould be the same. Make sure you create at least one Circle and test and print the results of your methods. in java
In this exercise, you are going to build on your Circleclass from the previous exercise. You are going to add 2 method, areaDifference and perimeterDifference. Both methods take a doubleradius of a second circle and return the difference from the current circle. For example, if you create a Circle object with a radius of 4 and call areaDifference(3), you will return the diffence between the area of a circle with radius 4 and the area of a circle with a radius of 3. perimeterDifferencewould be the same. Make sure you create at least one Circle and test and print the results of your methods. given: public class Circle{private double radius;public Circle(double theRadius){radius = theRadius;}// Add a method called area that returns the area of a circle// using Math.PIpublic double area(){return Math.PI*radius*radius;}// Add a method called perimeter that returns the perimeter of a// circle using Math.PIpublic double perimeter(){return Math.PI*2*radius;}}
(1) Add an __init__ method to the Widget class below. Each object of type Widget should have an instance variable called name and an instance variable called cost that represents a cost in dollars; those values are passed in when an object of type Widget is initialized. (2) Add a method to class Widget called is_cheap that returns True if the cost is less than $10, and False otherwise. (3) Add proper doctrings along with two examples for each method. You may use the Sample Usage code given below in your work.
I need to override the toString() method with my own, however I am not sure how to reference back to the parameters for the constructor of the class. I've included my code below. I even tried giving the class instance variables of the same name, however the error said the code was "unreachable." What am I doing wrong? /** * Superclass for the different types of appointments. * TODO: Appointments have a description & date MM/DD/YYYY * TODO: method: occursOn(int year, int month, int day); * 4 method constructor: year, month, day, description */ public class Appointment { /** * the constructor method for an Appointment. * * @param year - the year of the appointment. * @param month - the month of the appointment. * @param date - the day of the appointment. * @param description - a short description of the appointment. */ publicAppointment(intyear, intmonth, intdate, Stringdescription){ } /** * Method to return a string representation of the appointment. * Will be inherited by the…