Q2: A: Write the definition of class Example as follows: 1. Three public instance variables x, y and z; types float, String and Boolean. 2. One public shared data member s with initial value 10. 3. Two constructors: one default, one with three parameters

Q2: A: Write the definition of class Example as follows: 1. Three public instance variables x, y and z; types float, String and Boolean. 2. One public shared data member s with initial value 10. 3. Two constructors: one default, one with three parameters

C++ Programming: From Problem Analysis to Program Design

8th Edition

ISBN:9781337102087

Author:D. S. Malik

Publisher:D. S. Malik

Chapter10: Classes And Data Abstraction

Section: Chapter Questions

Problem 13SA

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Java program Make a class Employee with a name and salary. Make a class Manager inherit from Employee. Add an instance variable, named department, of type String. Supply a method toString that prints the manager’s name, department, and salary. Make a class Executive inherit from Manager. Supply appropriate toString methods for all classes. Supply a test program that tests these classes and methods.
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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) Extend a Circle class from Point class such as Class Circle extends Point Write a Default constructor in Circle class that sets radius, xCoordinate&yCoordinate to some default value e.g. -1; Write a Parameterized constructor in Circle class which takes xCoordinate, yCoordinate and radius as a parameter. E.g. Circle (int xCoordinate, int yCoordinate, double radius) { this.xCoordinate= xCoordinate; this.yCoordinate= yCoordinate;…
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Question.16. What is true about Class.getInstance()? i. Class.getInstance calls the constructor ii. Class.getInstance is same as new operator iii. Class.getInstance needs to have matching constructor iv. Class.getInstance creates object if class does not have any constructor