Area of a Rectangle Program plan: Filename: “Rectangle.java” This program file is used to define a class “Rectangle”. In the code, Define a class “Rectangle”. Declare class members “width” and “height”. Define a constructor “Rectangle()”. Initialize the “width” and “height”. Define a method “getArea()”. If the “width” is less than or equal to 0, Return “0”. If the “width” is equal to “1”, Return “1*height”. Create the object of class “Rectangle”. Calculate “smallerArea” by recursively calling “getArea”. Return the value of “smallerArea + width + height - 1” Filename: “RectangleDemo.java” This program file is used to define a class “RectangleDemo”. In the code, Define a class “RectangleDemo”. Define a method “main()”. Create the object “r1” of class “Rectangle”. Create the object “r2” of class “Rectangle”. Call the method “getArea()” and print the result. Print the expected result. Call the method “getArea()” and print the result. Print the expected result.

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Chapter 13, Problem 1PE

Program Plan Intro

Area of a Rectangle

Program plan:

Filename: “Rectangle.java”

This program file is used to define a class “Rectangle”. In the code,

Define a class “Rectangle”.

Declare class members “width” and “height”.

Define a constructor “Rectangle()”.

Initialize the “width” and “height”.

Define a method “getArea()”.

If the “width” is less than or equal to 0,

Return “0”.

If the “width” is equal to “1”,

Return “1*height”.

Create the object of class “Rectangle”.

Calculate “smallerArea” by recursively calling “getArea”.

Return the value of “smallerArea + width + height - 1”

Filename: “RectangleDemo.java”

This program file is used to define a class “RectangleDemo”. In the code,

Define a class “RectangleDemo”.

Define a method “main()”.

Create the object “r1” of class “Rectangle”.

Create the object “r2” of class “Rectangle”.

Call the method “getArea()” and print the result.

Print the expected result.

Call the method “getArea()” and print the result.

Print the expected result.

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