Write an inheritance hierarchy for classes Quadrilateral, Trapezoid, Parallelogr

Question

Write an inheritance hierarchy for classes Quadrilateral, Trapezoid, Parallelogram, Rectangle and Square. Use Quadrilateral as the base class of the hierarchy. Create and use a Point class to represent the points in each shape. Make the hierarchy as deep (i.e., as many levels) as possible. Specify the instance variables, properties, and methods for each class. The private instance variables of Quadrilateral should be the x-y coordinate pairs for the four endpoints of the Quadrilateral. Write a program that instantiates objects of your classes and outputs each object

Explanation / Answer

/* * Main.java * * Created on August 31, 2007, 1:39 AM * * To change this template, choose Tools | Template Manager * and open the template in the editor. */ package quadrilateraltest; /** * * @author Al */ public class Main { /** Creates a new instance of Main */ public Main() { } /** * @param args the command line arguments */ public static void main(String[] args) { // TODO code application logic here Quadrilateral quadrilateral = new Quadrilateral(1.1, 1.2, 6.6, 2.8, 6.6, 9.9, 2.2, 7.4); Trapezoid trapezoid = new Trapezoid(0.0, 0.0, 10.0, 0.0, 8.0, 5.0, 3.3, 5.0); Parallelogram parallelogram = new Parallelogram( 5.0, 5.0, 11.0, 5.0, 12.0, 20.0, 6.0, 20.0 ); Rectangle rectangle = new Rectangle( 17.0, 14.0, 30.0, 14.0, 30.0, 28.0, 17.0, 28.0 ); Square square = new Square( 4.0, 0.0, 8.0, 0.0, 8.0, 4.0, 4.0, 4.0 ); System.out.printf("%s %s %s %s %s ", quadrilateral, trapezoid, parallelogram, rectangle, square ); } }

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