(The Octagon class) Write a class named Octagon thatextends GeometricObject and

Question

(The Octagon class) Write a class named Octagon thatextends GeometricObject and implements the Comparableand Cloneable interfaces. Assume that all eight sides of theoctagon are of equal size. The area can be computed using thefollowing formula:

area = A2 + 4/22Bside*side

Draw the UML diagram that involves Octagon, GeometricObject, Comparable, and Cloneable. Write a test programthat creates an Octagon object with side value 5 and displays itsarea and perimeter. Create a new object using the clone method andcompare the two objects using the compareTo method.

Explanation / Answer

public String toString()
{
  return super.toString() + " Side size: "+ side;
}

// JUST fortesting!
public static void main(String[] args) throws Exception {
  Octagon size4 = new Octagon(4);
  System.out.println(" Size 4 Octagon: " + size4);
  Octagon size5 = new Octagon(5);
  System.out.println(" Size 5 Octagon: " + size5);
  Octagon size6 = new Octagon(6);
  System.out.println(" Size 6 Octagon: " + size6);
  Octagon cloneCopy = (Octagon)size5.clone();
    
  if (size5.compareTo(cloneCopy) == 0)
   System.out.println("Original and clone are samesize.");
  else
   System.out.println("Original and clone are NOTthe same size???");

  if(size4.compareTo(size5) < 0)
   System.out.println("Size4 smaller thansize5.");
  else if (size4.compareTo(size5) == 0)
   System.out.println("Size4 same size assize5.");
  else
   System.out.println("Size4 larger thansize5.");
  
  if (size6.compareTo(size5) < 0)
   System.out.println("Size6 smaller thansize5.");
  else if (size6.compareTo(size5) == 0)
   System.out.println("Size6 same size assize5.");
  else
   System.out.println("Size6 larger thansize5.");

}

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