Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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In-class Assignment Day 8
You should draw the hierarchy for your classes to understand how the coding should be structured. Be sure to notate any classes that are abstract.
- Write an abstract class for Shape. The intended subclasses are Polygon, Circle, Triangle, and Rectangle. All of these will have a name, an area, and a perimeter.
(Consider which methods might be abstract.) Add a toString method that will return the information about the Shape, for example: Triangle, Area: 7.5, Perimeter: 12.0
- Write the class Rectangle. A Rectangle is a Shape and should have a width and a height.
When a Rectangle is outputted, it should read: Rectangle, Length: #, Width: #, Area: #, Perimeter: #
- Write the class for Circle. Every circle is a Shape that has a radius. Be sure to provide an accessor method (getter) for the radius.
When a circle is outputted, it should read: Circle, Radius: #, Area: #, Circumference: #
- Write a TestShape class that has the main method, which creates Rectangle and Circle objects. Print out the specific attributes about the shape.
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