What will be the output of the following code? a. Compilation error in line 1 (abstract method cannot be private) b. Compilation error in line 2 (abstract class cannot have concrete method) c. Compilation error in line 3 (abstract class cannot be extended) d. Compilation error in line 4 (marks method should have public access modifiers.

What will be the output of the following code? a. Compilation error in line 1 (abstract method cannot be private) b. Compilation error in line 2 (abstract class cannot have concrete method) c. Compilation error in line 3 (abstract class cannot be extended) d. Compilation error in line 4 (marks method should have public access modifiers.

Programming Logic & Design Comprehensive

9th Edition

ISBN:9781337669405

Author:FARRELL

Publisher:FARRELL

Chapter11: More Object-oriented Programming Concepts

Section: Chapter Questions

Problem 15RQ

See similar textbooks

Similar questions

Course Title: Modern Programming Language Please Java Language Code and Correct Code Please Question : Design an abstract class GeometricObject. GeometricObject must ensure that its children must implement calcArea() method. Design Rectangle18ARID2891 and CircleMJibranAkram Classes as children of GeometricObject class with overridden toString() method to return “Rectangle18ARID2891 with w Width and h Height is drawn” OR “CircleMJibranAkram with r Radius is drawn”. The attributes of Rectangle18ARID2891 are length, width. The attribute of CircleMJibranAkram is radius Hint: Area of circle=πr2 , Area of rectangle= width*length
True or False ___(1) An abstract class can have fields. ___(2) You can create an object from an abstract class _ _(3) An abstract class can have both abstract methods and methods that have method body
Course Title: Modern Programming Language Please Java Language Code Question : Design an abstract class GeometricObject. GeometricObject must ensure that its children must implement calcArea() method. Design Rectangle18-ARID-2891 and CircleM.JibranAkram Classes as children of GeometricObject class with overridden toString() method to return “Rectangle with w Width and h Height is drawn” OR “Circle with r Radius is drawn”. The attributes of Rectangle are length, width. The attribute of Circle is radius Hint: Area of circle=πr2 , Area of rectangle= width*length
Vehicle is an abstract class. Create the Airplane class as a subclass of Vehicle. Extend and override Airplane as necessary to meet the criteria below. The travel method should return the distance traveled by the Airplane object. CODE: abstract class Vehicle { public abstract double travel(double time);} //add class definitions below this line //add class definitions above this line public class Exercise2 { public static void main(String[] args) { //add code below this line //add code above this line }}
True or False A child class cannot override the parent’s definition of an inherited method.
The Temperature class is an abstract class with two abstract methods. Create the Conversion class which inherits from Temperature. Use the formulas below to help with the temperature conversions. CODE: abstract class Temperature { public abstract double celsius(double temp); public abstract double fahrenheit(double temp);} //add class definitions below this line //add class definitions above this line public class Exercise3 { public static void main(String[] args) { //add code below this line Conversion c = new Conversion(); //add code above this line }}
3. Person and Customer Classes The Person and Customer Classes Write a class named Person with data attributes for a person’s name, address, and telephone number. Next, write a class named Customer that is a subclass of the Person class. The Customer class should have a data attribute for a customer number, and a Boolean data attribute indicating whether the customer wishes to be on a mailing list. Demonstrate an instance of the Customer class in a simple program.
Class definitionDefine a class bankAccount to implement the basic properties of a bank account. Anobject of this class should store the following data: Account holder’s name (string) Account number (int) Account type (string, check/savings/business) Balance (double) Interest rate (double) – store interest rate as a decimal number. Add appropriate member functions to manipulate an object. Use a static member in theclass to automatically assign account numbers.
True or False A subclass can override methods from its superclass.
Let’s build a Player Portfolio System that has an abstract class. Create a new Player Abstract class. Implement getName method in this abstract class. Define other methods as abstract. Here is an example: abstract class PlayerA {private String name;public String getNameA(){return name;}public PlayerA(String name) {this.name = name;}abstract public int getStatsA();abstract public String getSportA();} Create NFL Player and NBA Player concrete classes that will extend Player abstract class. Create a main method to implement your classes
language: Java Class Inheritance with an abstract class Define a class Employee with the following fields: _name, _empId, _department, _position (_title), _yearlySalary, _fullTime (a boolean: true/false) , _month , _year (time of hire) Add constructor and properties Define an abstract method GetBiMonthlySalary() (if the employee is paid twice a month) Define an abstract method GetVacationTime() that returns the number of vacation time this employee would have based on time of hire Override the ToString() method to return a string that contains the information pertaining to an employee such as name, empId, department, and where full time or not. Define a class HourlyEmployee that inherits from Employee. This class should have 2 fields of its own: _hours (hours worked in half a month) and _wage (hourly wage) Provide necessary constructor, properties and methods Override the ToString() to also return the additional fields Gets 3 days of vacation after first year if the…
Public members of a base class can be accessed by anything from outside the base class. Private members can be accessed only by the base class and derived classes. Protected members can be accessed by the base class and any of its descendants (child class or child of a child class). Group of answer choices True False