SumArea.Java Program Plan: Include a class name named “Exercise_13_12”. Declare the main() method. Create an array of four objects two of circle type and two of rectangle type. Print total elements in the array. Create a function that returns the sum of the areas of all the geometric objects in an array. Close the main() method. Close the class. Include an abstract class “GeometricObject” that implements Comparable. Declare all the data types of the variables. Construct a default geometric object. Construct a geometric object with color and filled value. Assign color and fill to the object. Set a new color. Define an isFilled method returns filled and since filled is Boolean; the get method is named isFilled. Set a new filled and getDateCreated method. Override toString function to return output. Override function to implement the compareTo method. Abstract method getMax to return maximum object. Define Abstract method getArea. Define Abstract method getPerimeter. Close class. Include a class “Rectangle” that extends the class GeometricObject class. Declare width and height of rectangle. Create a Rectangle constructor. Assign values to height and width. Assign rectangle values to all attributes. Create a function to return width. Create a function to return radius. Create a function to set a new width. Create a function to return height. Create a function to set a new height. Create an override function to return area. Create an override function to return Perimeter. Overriding function to return String description of this rectangle. Close class. Include a class “Circle” that extends the class GeometricObject class. Declare radius variable. Create a Circle constructor. Assign values to radius. Create a function to set color and set fill in the Circle. Create a Function to return radius. Create a function to set a new radius. Create an override function to return area. Create an override function to return perimeter. Create an override string description of circle object. Close class.

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Chapter 13, Problem 13.12PE

Program Plan Intro

SumArea.Java

Program Plan:

Include a class name named “Exercise_13_12”.

Declare the main() method.

Create an array of four objects two of circle type and two of rectangle type.

Print total elements in the array.

Create a function that returns the sum of the areas of all the geometric objects in an array.

Close the main() method.

Close the class.

Include an abstract class “GeometricObject” that implements Comparable.

Declare all the data types of the variables.

Construct a default geometric object.

Construct a geometric object with color and filled value.

Assign color and fill to the object.

Set a new color.

Define an isFilled method returns filled and since filled is Boolean; the get method is named isFilled.

Set a new filled and getDateCreated method.

Override toString function to return output.

Override function to implement the compareTo method.

Abstract method getMax to return maximum object.

Define Abstract method getArea.

Define Abstract method getPerimeter.

Close class.

Include a class “Rectangle” that extends the class GeometricObject class.

Declare width and height of rectangle.

Create a Rectangle constructor.

Assign values to height and width.

Assign rectangle values to all attributes.

Create a function to return width.

Create a function to return radius.

Create a function to set a new width.

Create a function to return height.

Create a function to set a new height.

Create an override function to return area.

Create an override function to return Perimeter.

Overriding function to return String description of this rectangle.

Close class.

Include a class “Circle” that extends the class GeometricObject class.

Declare radius variable.

Create a Circle constructor.

Assign values to radius.

Create a function to set color and set fill in the Circle.

Create a Function to return radius.

Create a function to set a new radius.

Create an override function to return area.

Create an override function to return perimeter.

Create an override string description of circle object.

Close class.

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