Java How To Program (Early Objects)(10th Edition) Chapter 8

Exercise 8.4: Create a class Rectangle with attributes length and width, each of which defaults to 1. Provide methods that calculate the rectangles perimeter and area. Use set and get methods for both length and width. The set methods will verify that length and width are each floating-point numbers larger than 0.0 and less than 20.0. Write a program to test class Rectangle.

Important note: Please add brief comments to most, if not all of the code to explain what is being done in the code so I have a better understanding of what's being used in the code and what it's doing. Also, could you make sure the user is propmpted for the length and the width? Thank you.