Question

In: Computer Science

Given the following UML class diagram, implement the class as described by the model. Use your...

Given the following UML class diagram, implement the class as described by the model. Use your best judgment when implementing the code inside of each method.

+---------------------------------------------------+
| Polygon |
+---------------------------------------------------+
| - side_count : int = 3 |
| - side_length : double = 1.0 |
+---------------------------------------------------+
| + Polygon() |
| + Polygon(side_count : int) |
| + Polygon(side_count : int, side_length : double) |
| + getSides() : int |
| + setSides(side_count : int) |
| + getSideLength() : double |
| + setSideLength(side_length : double) |
| + perimeter() : double |
+---------------------------------------------------+

The following information might also be useful:

- The perimeter of a polygon is the sum of it's side lengths.
- Side counts of less than 3 are meaningless for a polygon, and should not be accepted.
- Side lengths of less than 0 are meaningless for a polygon, and should not be accepted.

Solutions

Expert Solution


class Polygon {
   private int side_count;
   private double side_length;

   public Polygon() {

       side_count = 3;
       side_length = 1;
   }

   public Polygon(int s) {
       //checking if values are valid
       if (s >= 3)
           side_count = s;
       side_length = 1;
   }

   public Polygon(int s, double l) {
       //checking if values are valid
       if (s >= 3 && l >= 1) {
           side_count = s;
           side_length = l;
       }
   }

   public int getSides() {
       return side_count;
   }

   public void setSides(int s) {
       //checking if values are valid
       if (s >= 3)
           side_count = s;
   }

   public double getSideLength() {
       return side_length;
   }

   public void setSideLength(double l) {
       //checking if values are valid
       if (l >= 1)
           side_length = l;
   }

   //sides * length
   public double perimeter() {
       return side_count * side_length;
   }
}

public class TestPolygon {
   public static void main(String[] args) {
       Polygon p= new Polygon(5, 15);
       System.out.println("Perimeter : "+p.perimeter());
   }
}

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