For the Circle class, create the following: • A private double instance variable m_radius. • A constructor that takes two parameters (in the order of color, radius). It should use the parameter for radius to set the m_radius instance variable and then explicitly call the parent class constructor using the super keyword and pass in the color parameter. • A method that overrides the calcArea method of the superclass and calculates the area of the circle. The area of a circle can be calculated as 3.14 xr² (where r is the radius). • A method that overrides the calcPerimeter method of the superclass and calculates the perimeter of the circle. The perimeter of a circle can be calculated as 2 x 3.14 xr (where r is the radius). For the Rectangle class, create the following: • Two private double instance variables m_width and m_length. • A constructor that takes three parameters (in the order of color, width, length). It should use the parameters for width and length to set the instance variables and then explicitly call the parent class constructor using the super keyword and pass in the color parameter. • A method that overrides the calcArea method of the superclass and calculates the area of the rectangle. The area of a rectangle can be calculated as width x height.
For the Circle class, create the following: • A private double instance variable m_radius. • A constructor that takes two parameters (in the order of color, radius). It should use the parameter for radius to set the m_radius instance variable and then explicitly call the parent class constructor using the super keyword and pass in the color parameter. • A method that overrides the calcArea method of the superclass and calculates the area of the circle. The area of a circle can be calculated as 3.14 xr² (where r is the radius). • A method that overrides the calcPerimeter method of the superclass and calculates the perimeter of the circle. The perimeter of a circle can be calculated as 2 x 3.14 xr (where r is the radius). For the Rectangle class, create the following: • Two private double instance variables m_width and m_length. • A constructor that takes three parameters (in the order of color, width, length). It should use the parameters for width and length to set the instance variables and then explicitly call the parent class constructor using the super keyword and pass in the color parameter. • A method that overrides the calcArea method of the superclass and calculates the area of the rectangle. The area of a rectangle can be calculated as width x height.
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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