Introduction to Java Programming and Data Structures, Comprehensive Version (11th Edition)
11th Edition
ISBN: 9780134670942
Author: Y. Daniel Liang
Publisher: PEARSON
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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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Chapter 13 Solutions
Introduction to Java Programming and Data Structures, Comprehensive Version (11th Edition)
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Ch. 13.4 - How do you create a Calendar object for the...Ch. 13.4 - For a Calendar object c, how do you get its year,...Ch. 13.5 - Prob. 13.5.1CPCh. 13.5 - Prob. 13.5.2CPCh. 13.5 - Prob. 13.5.3CPCh. 13.5 - Prob. 13.5.4CPCh. 13.6 - Prob. 13.6.1CPCh. 13.6 - Prob. 13.6.2CPCh. 13.6 - Can the following code be compiled? Why? Integer...Ch. 13.6 - Prob. 13.6.4CPCh. 13.6 - What is wrong in the following code? public class...Ch. 13.6 - Prob. 13.6.6CPCh. 13.6 - Listing 13.5 has an error. If you add list.add...Ch. 13.7 - Can a class invoke the super.clone() when...Ch. 13.7 - Prob. 13.7.2CPCh. 13.7 - Show the output of the following code:...Ch. 13.7 - Prob. 13.7.4CPCh. 13.7 - What is wrong in the following code? public class...Ch. 13.7 - Show the output of the following code: public...Ch. 13.8 - Prob. 13.8.1CPCh. 13.8 - Prob. 13.8.2CPCh. 13.8 - Prob. 13.8.3CPCh. 13.9 - Show the output of the following code: Rational r1...Ch. 13.9 - Prob. 13.9.2CPCh. 13.9 - Prob. 13.9.3CPCh. 13.9 - Simplify the code in lines 8285 in Listing 13.13...Ch. 13.9 - Prob. 13.9.5CPCh. 13.9 - The preceding question shows a bug in the toString...Ch. 13.10 - Describe class-design guidelines.Ch. 13 - (Triangle class) Design a new Triangle class that...Ch. 13 - (Shuffle ArrayList) Write the following method...Ch. 13 - (Sort ArrayList) Write the following method that...Ch. 13 - (Display calendars) Rewrite the PrintCalendar...Ch. 13 - (Enable GeometricObject comparable) Modify the...Ch. 13 - Prob. 13.6PECh. 13 - (The Colorable interface) Design an interface...Ch. 13 - (Revise the MyStack class) Rewrite the MyStack...Ch. 13 - Prob. 13.9PECh. 13 - Prob. 13.10PECh. 13 - (The Octagon class) Write a class named Octagon...Ch. 13 - Prob. 13.12PECh. 13 - Prob. 13.13PECh. 13 - (Demonstrate the benefits of encapsulation)...Ch. 13 - Prob. 13.15PECh. 13 - (Math: The Complex class) A complex number is a...Ch. 13 - (Use the Rational class) Write a program that...Ch. 13 - (Convert decimals to fractious) Write a program...Ch. 13 - (Algebra: solve quadratic equations) Rewrite...Ch. 13 - (Algebra: vertex form equations) The equation of a...
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