Task: Implement the following classes and test their methods. Shape |- color : String - filled : boolean + Shape() + Shape(color : String , filled : boolean) + getColor() : String + setColor(color : String) : void + isFilled() : boolean + setFilled(filled : boolean) : void + getArea() : double + getPerimeter() : double + toString : String Circle Rectangle - width : double - length : double + Rectangle() + Rectangle(width : double , length : double) + Rectangle(width : double , length : double , color : String , filled : boolean) + getWidth() : double + setWidth(width : double) : void + getlength() : double + setLength(length : double) : void + getArea() : double + getPerimeter(0 : double + toString() : String - radius : double + Circle() + Circle(radius : double) + Circle(radius : double , color : String, filled : boolean) + getRadius() : double + setRadius(radius : double) : void + getArea() : double + getPerimeter(0 : double + toString() : String

Task: Implement the following classes and test their methods. Shape |- color : String - filled : boolean + Shape() + Shape(color : String , filled : boolean) + getColor() : String + setColor(color : String) : void + isFilled() : boolean + setFilled(filled : boolean) : void + getArea() : double + getPerimeter() : double + toString : String Circle Rectangle - width : double - length : double + Rectangle() + Rectangle(width : double , length : double) + Rectangle(width : double , length : double , color : String , filled : boolean) + getWidth() : double + setWidth(width : double) : void + getlength() : double + setLength(length : double) : void + getArea() : double + getPerimeter(0 : double + toString() : String - radius : double + Circle() + Circle(radius : double) + Circle(radius : double , color : String, filled : boolean) + getRadius() : double + setRadius(radius : double) : void + getArea() : double + getPerimeter(0 : double + toString() : String

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Implement the design of the Pizza class so that the following output is produced:[Your code should work for any number of parameters added in the set_toppings_info method]# Write your codes here.print("Pizza Count:", Pizza.pizza_count)print("=======================")p1 = Pizza("Chicken")p1.set_toppings_info(25, 1, 4, 0)p1.display()print("------------------------------------")p2 = Pizza("Olives")p2.set_toppings_info(15, 1.5, 0, 0)p2.display()print("------------------------------------")p3 = Pizza("Sausage")p3.set_toppings_info(50, 5, 2, 0)p3.display()print("=======================")print("Pizza Count:", Pizza.pizza_count)Output:Pizza Count: 0=======================Toppings: Chicken25 calories1 g fat4 g protein0 g carbs------------------------------------Toppings: Olives15 calories1.5 g fat0 g protein0 g carbs------------------------------------Toppings: Sausage50 calories5 g fat2 g protein0 g carbs=======================Pizza Count: 3
Add the following accessor methods to your Rectangle class:public boolean contains(int x, int y)public boolean contains(Point p)Returns whether the given Point or coordinates lie inside the bounds of this Rectangle .
Can you implement the Student class using the concepts of encapsulation? A solution is placed in the "solution" section to help you, but we would suggest you try to solve it on your own first. You are given a Student class in the editor. Your task is to add two fields: ● String name ● String rollNumber and provide getter/setters for these fields: ● getName ● setName ● getRollNumber ● setRollNumber Implement this class according to the rules of encapsulation. Input # Checking all fields and getters/setters Output # Expecting perfectly defined fields and getter/setters. There is no need to add constructors in this class.
Implement the design of the Patient class so that the following output is produced:[For BMI, the formula is BMI = weight/height^2, where weight is in kg and height inmeters] Driver Code # Write your code herep1 = Patient("A", 55, 63.0, 158.0)p1.printDetails()print("====================")p2 = Patient("B", 53, 61.0, 149.0)p2.printDetails() Output
Implement a class that simulates a traffic light. The next method advances the color in the usual way, from green to yellow to red, then again to green. Provide two constructors, as described in the documentation of the public interface. Also supply a method that yields the number of times that this traffic light has been red. /** A simulated traffic light.*/public class TrafficLight{ private String color; private int reds; /** Constructs a green traffic light. */ public TrafficLight() { /* Your code goes here */ } /** Constructs a traffic light. @param initialColor the initial color "green", "yellow", or "red" */ public TrafficLight(String initialColor) { /* Your code goes here */ } /** Moves this traffic light to the next color. */ public void next() { /* Your code goes here */ } /** Returns the current color of this traffic light. @return the current color */ public String getColor() {…
Please complete the task by yourself only in JAVA with explanation. Don't copy. Thank you. Only finish the (d) question, Thank you ! Using quicksort to sort an array of car objects by various criteria. Define a class Car as follows: class Car { public String make; public String model; public int mpg; // Miles per gallon } a) Implement a comparator called CompareCarsByMakeThenModel that can be passed as an argument to the quicksort method from the lecture notes. CompareCarsByMakeThenModel should return a value that will cause quicksort to sort an array of cars in ascending order (from smallest to largest) by make and, when two cars have the same make, in ascending order by model. b) Implement a comparator called CompareCarsByDescendingMPG that can be passed as an argument to the quicksort method from the lecture notes. CompareCarsByDescendingMPG should return a value that will cause quicksort to sort an array of cars in descending order (from largest to smallest) by mpg. c)…
Write a class that represents a player in a game. The player should have a name, password,experience points, an inventory array of four strings, and a location x,y. Your class shouldhave mutator and accessor methods for all variables. For example: setName(), getName(). Itshould have a suitable display method. Mutators and accessors should be public but allvariables should be private. To implement get inventory, use string * getInv(); Use the scoperesolution operator to implement larger methods such as display(). Use in class methods forshorter methods such as setName(), getName(). (in C++)Example:void setName(string name){this->name = name;}string *getInv();...string* player::getInv(){return inventory;}Note that in the above method setName “this->” is required for disambiguation. If writtenvoid setName(string n){name = n;}“this->” is not required.Write a test program that creates three players and displays them.Example Output:This program generates three player objects and…
Write a Rectangle class to represent rectangles, with two data fields (width, height) and four methods (input data, display data, calculate and return area, calculate and return perimeter). Write another class to test all methods of the Rectangle class.
Given the Solid class, extend it with: Pyramid Cylinder RectangularPrism Sphere Make sure to create the constructor and override the volume and surfaceArea methods. Also extend RectangularPrism with Cube. HINT: You can look up formulas for how to compute the volume and surface area of a certain type of shape online. ========================================== public class SolidTester{public static void main(String[] args){String name;double volume;double surfaceArea; // Pyramid constructor should take name, length, width, height// in that orderPyramid pyramid = new Pyramid("My pyramid", 1, 3, 5);name = pyramid.getName();volume = round(pyramid.volume(), 2);surfaceArea = round(pyramid.surfaceArea(), 2);System.out.println("Pyramid '" + name + "' has volume: " + volume +" and surface area: " + surfaceArea + "."); // Sphere constructor should take name then radiusSphere sphere = new Sphere("My sphere", 4);name = sphere.getName();volume = round(sphere.volume(), 2);surfaceArea =…
Add the following constructor to your Rectangle class: public Rectangle(Point p, int width, int height) Construct a new Rectangle whose top-left corner is specified by the given Point and with the given width and height.
Write the equals method for Circle2 which returns true when the radius and the color are the same as the parameter’s radius and color. The TestCircle2, Circle2 and GeometricObject2 classes are given as follows. public class TestCircle2 { public static void main(String[] args) { Circle2 c1 = new Circle2(2.3, "red"); Circle2 c2 = new Circle2(5.6, "white"); Circle2 c3 = new Circle2(2.3, "red"); System.out.println("c1 equals c2: " + c1.equals(c2)); System.out.println("c1 equals c3: " + c1.equals(c3)); System.out.println("c2 equals c3: " + c2.equals(c3)); } } class Circle2 extends GeometricObject2 { private double radius; public Circle2() { } public Circle2(double radius) { this.radius = radius; } public Circle2(double radius, String color) { this.radius = radius; setColor(color); } /** * Return radius */ public double getRadius() {…
Implement the design of the ECustomer class so that the following output is produced:[Your code should work for any number of products added in the setProductDetails method]# Write your codes here.print("Total E-Customer:", ECustomer.count)c1 = ECustomer("James")c1.setProductDetails("TV",35000,"Air Cooler", 9000)c2 = ECustomer("Mike")c2.setProductDetails("Mobile",20000,"Headphone",1200,"Fridge", 45000)c3 = ECustomer("Sarah")c3.setProductDetails("Headphone", 1200)print("=========================")c1.printDetail()print("=========================")c2.printDetail()print("=========================")c3.printDetail()print("=========================")print("Total E-Customer:", ECustomer.count)Output:Total E-Customer: 0=========================Name: JamesProducts: TV, Air CoolerTotal cost: 44000=========================Name: MikeProducts: Mobile, Headphone, FridgeTotal cost: 66200=========================Name: SarahProducts: HeadphoneTotal cost: 1200=========================Total E-Customer:…