class circle public: void print() const; void setRadius (double); void setCenter(double, double); void getCenter(double&, double&); double getRadius(); double area(); circle(); circle(double, double, double); double, double); private: double xCoordinate: double xCoordinate; double radius; } class cylinder: public circle { public: void print() const; void setHeight(double); double getHeight(); double volume(): {

class circle public: void print() const; void setRadius (double); void setCenter(double, double); void getCenter(double&, double&); double getRadius(); double area(); circle(); circle(double, double, double); double, double); private: double xCoordinate: double xCoordinate; double radius; } class cylinder: public circle { public: void print() const; void setHeight(double); double getHeight(); double volume(): {

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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Similar questions

Consider the following class definition: class circle { public: void print() const; void setRadius(double); void setCenter(double, double); void getCenter(double&, double&); double getRadius(); double area(); circle(); circle(double, double, double); double, double); private: double xCoordinate; double yCoordinate; double radius; } class cylinder: public circle { public: void print() const; void setHeight(double); double getHeight(); double volume(); double area(); cylinder(); cylinder(double, double, private: double height; } Suppose that you have the declaration: cylinder newCylinder; Write the definitions of the member functions of the classes circle and cylinder. Identify the member functions of the class cylinder that overrides the member functions of the class circle
package assignment; public class Circle2D2 { //data fields specifying the center of the circle private double x, y; //data field radius private double radius; //default circle with (0, 0) for (x, y) and 1 for radius Circle2D2() { this(0, 0, 1); } //circle with the specified x, y, and radius Circle2D2(double x, double y, double radius) { this.x = x; this.y = y; this.radius = radius; } //return x public double getX() { return x; } //return y public double getY() { return y; } //return radius public double getRadius() { return radius; } //return the area of the circle public double getArea() { return Math.PI * Math.pow(radius, 2); } //return the perimeter of the circle public double getPerimeter() { return 2 * Math.PI * radius; } //return true if the specified point (x, y) is inside this circle public boolean contains(double x, double y) { return Math.sqrt(Math.pow(x - this.x, 2) + Math.pow(y - this.y, 2)) < radius; } //return true if…
Incorrect Question 6 public class Shape { Color fillColor; } public Shape() { fill Color = Color. RED; } } public Shape(Color fillColor) { this.fill Color = fillColor; } public class Circle extends Shape { int radius; public Circle() { radius = 1; } public Circle(int radius) { this.radius = radius; } public Circle(int radius, Color fillColor) { } super(fillColor); this.radius = radius; Circle c1= new Circle(); Circle c2= new Circle(5); Circle c3 = new Circle(10, Color.BLUE); Which of the following are correct? c2 has radius 5 c1 is red c2 is red c3 has radius 10 c3 has radius 1 c3 is red c1 is blue ✔c2 has radius 10 c3 is blue c1 has radius 5 c1 has radius 1 c2 has radius 1 c2 is blue
Public classTestMain { public static void main(String [ ] args) { Car myCar1, myCar2; Electric Car myElec1, myElec2; myCar1 = new Car( ); myCar2 = new Car("Ford", 1200, "Green"); myElec1 = new ElectricCar( ); myElec2 = new ElectricCar(15); } }
Class Quiz public Quiz (int quesList, int quesMissed) {quesList = this.quesList;quesMissed = this.quesMissed;} private void calculate(){// get the point worth of each question and calculate final scorepointsPerQues = (100/quesList);scoreQuiz = quesList - quesMissed;} Class PassFailQuiz public PassFailQuiz (int quesList, int quesMissed, int scoreQuiz) { super(quesList, quesMissed);} How do I move scoreQuiz from private void calculate() to equal the third constructor value in PassFailQuiz?
public class LabProgram { public static void main(String args[]) { Course course = new Course(); String first; // first name String last; // last name double gpa; // grade point average first = "Henry"; last = "Cabot"; gpa = 3.5; course.addStudent(new Student(first, last, gpa)); // Add 1st student first = "Brenda"; last = "Stern"; gpa = 2.0; course.addStudent(new Student(first, last, gpa)); // Add 2nd student first = "Jane"; last = "Flynn"; gpa = 3.9; course.addStudent(new Student(first, last, gpa)); // Add 3rd student first = "Lynda"; last = "Robison"; gpa = 3.2; course.addStudent(new Student(first, last, gpa)); // Add 4th student course.printRoster(); } } // Class representing a student public class Student { private String first; // first name private String last; // last name private double gpa; // grade point average…
class Point { private: int x, y ; public: : x(u), y(v) {} Point (int u, int v) int getX) { return x; } int getY () { return y; } void doubleVal() { *= 2: y *= 2; } }; int main () { const Point myPoint (5, 3) myPoint.doubleVal() ; cout << myPoint.getX() << " " return 0; << myPoint.getY() << "\n"; }
public class Plant { protected String plantName; protected String plantCost; public void setPlantName(String userPlantName) { plantName = userPlantName; } public String getPlantName() { return plantName; } public void setPlantCost(String userPlantCost) { plantCost = userPlantCost; } public String getPlantCost() { return plantCost; } public void printInfo() { System.out.println(" Plant name: " + plantName); System.out.println(" Cost: " + plantCost); }} public class Flower extends Plant { private boolean isAnnual; private String colorOfFlowers; public void setPlantType(boolean userIsAnnual) { isAnnual = userIsAnnual; } public boolean getPlantType(){ return isAnnual; } public void setColorOfFlowers(String userColorOfFlowers) { colorOfFlowers = userColorOfFlowers; } public String getColorOfFlowers(){ return colorOfFlowers; } @Override public void printInfo(){…
UML for the following Code: public class ProductOrder { private int numBook = 0; private int numCD = 0; private int numDVD = 0; public ProductOrder(int numBook, int numCD, int numDVD){ this.numBook = numBook; this.numCD = numCD; this.numDVD = numDVD; } public int getBook(){ return numBook; } public void setBook(int numBook){ this.numBook = numBook; } public int getCD(){ return numCD; } public void setCD(int numCD){ this.numCD = numCD; } public int getDVD(){ return numDVD; } public void setDVD(int numDVD){ this.numDVD = numDVD; } public int getProductTotal(){ return getBook() + getCD() + getDVD(); } }
Java class Main { publicstaticvoid main(String[] args) { // Coin myPenny = new Coin(CoinType.PENNY); // Coin myNickel = new Coin(CoinType.NICKEL); // Coin myDime = new Coin(CoinType.DIME); // Coin myQuarter = new Coin(CoinType.QUARTER); // Coin myHalfDollar = new Coin(CoinType.HALF_DOLLAR); // Coin myDollar = new Coin(CoinType.DOLLAR); // System.out.println(printValue(myPenny)); // System.out.println(printValue(myNickel)); // System.out.println(printValue(myDime)); // System.out.println(printValue(myQuarter)); // System.out.println(printValue(myHalfDollar)); // System.out.println(printValue(myDollar)); } publicstatic String printValue(Coin c){ String result = ""; // result = String.format("The value of a %s is $%.2f", c.getName(), c.getValue()); return result; } }
public class Application { public static void main(String[] args) { Employee empl = new Employee(); empl.firstName = "Ali"; empl.lastName = "Omar"; empl.salary = 20000; Employee emp2 = new Employee(); emp2.firstName = "Mohamed"; emp2.lastName = "Nour"; emp2.salary = 30000; System.out.println("- System.out.printin("- empl.employeeSalary(); System.out.println("- empl.checkEmployeeSalary(emp1.salary, emp2.salary); System.out.printin("- System.out.println("- printEmployee(emp2); System.out.printin("- Employee employeeArr[] = new Employee[2]: employeeArr[0] = empl; employeeArr[1] = emp2; Application a = new Åpplication(); a.printArrayofEmployee(employeeArr); Non static (instance) start to call Static function to print ---------"); "); - Non Static function to print - --"); Non static (instance) start to call same class Static function to print --------); -"); Non Static function to print ----); System.out.println("- System.out.printin("- System.out.printin("Salary : " + Employee.salary);…
package debugging; public class BeanCounter {public static int beanCount = 0;} public class Bean {public Color beanColor;public String description;public Bean(Color beanColor, String description){this.beanColor = beanColor;this.description = description;}} public class Color {double[] rgb;double saturation;public Color(double[] rgb, double saturation){this.rgb = rgb;this.saturation = 0.0;}} public class Debugging { /*** @param args the command line arguments*/public static void main(String[] args) {BeanCounter bc = new BeanCounter();double[] redGreenBlue = {22.3d, 41.7d, 202.57d};Color c = new Color(rgb, 22.44+0.05, 15.78, 79.53, 252.04);++BeanCounter.beanCount;Bean b = new FavaBean(c); // New bean created!bc.beanCount++;}} 1. Remove the errors, warnings and mistakes that are in the source code. 2. Modify the code so that: •one bean is created •one bean is counted •there is only one line in the main method