(The Rectangle class) Following the example of the Circle class in Section 8.2, design a class named Rectangle to represent a rectangle. The class contains: ■ Two double data fields named width and...

(The Rectangle class) Following the example of the Circle class in Section 8.2,
design a class named Rectangle to represent a rectangle. The class contains:


■ Two double data fields named width and height that specify the width and
height of the rectangle. The default values are 1 for both width and height.
■ A no-arg constructor that creates a default rectangle.
■ A constructor that creates a rectangle with the specified width and height.
■ A method named getArea() that returns the area of this rectangle.
■ A method named getPerimeter() that returns the perimeter.


Draw the UML diagram for the class and then implement the class. Write a test
program that creates two Rectangle objects—one with width 4 and height 40
and the other with width 3.5 and height 35.9. Display the width, height, area,
and perimeter of each rectangle in this order.