(CO 1) Write a Rectangle class that has the following member variables: • length

Question

(CO 1) Write a Rectangle class that has the following member variables:
•         length
•         width
The class should have the following member functions:
•         Default constructor that sets length and width to 0.0
•         Constructor that accepts the length and width as arguments
•         setLength, a mutator function for the length variable
•         getLength, an accessor function for the length variable
•         setWidth, a mutator function for the width variable
•         getWidth, an accessor function for the width variable
•         calculateArea, returns area, which is calculated as area = length × width
•         calculatePerimeter, returns perimeter, which is calculated as perimeter = 2 × length + 2 × width

Explanation / Answer

public class Rectangle { private double length; private double width; public Rectangle() { this.length = 0; this.width = 0; } public Rectangle(double length, double width) { this.length = length; this.width = width; } public double getLength() { return length; } public void setLength(double length) { this.length = length; } public double getWidth() { return width; } public void setWidth(double width) { this.width = width; } public double calculateArea() { return length * width; } public double calculatePerimeter() { return 2*(length+width); } }

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