Polkadot.java

import java.awt.*;
    
   public class Polkadot
   {
      private double myX;   // x and y coordinates of center
      private double myY;
      private double myDiameter;
      private Color myColor; 
      private double myRadius;
     // constructors
      public Polkadot()     //default constructor
      {
         myX = 200;
         myY = 200;
         myDiameter = 25;
         myColor = Color.RED;
         myRadius = myDiameter/2;
      }
      public Polkadot(double x, double y, double d, Color c)
      {
         myX = x;
         myY = y;
         myDiameter = d;
         myColor = c;
         myRadius = d/2;
      }
    // accessor methods
      public double getX() 
      { 
         return myX;
      }
      public double getY()      
      { 
         return myY;
      }
      public double getDiameter() 
      { 
         return myDiameter;
      }
      public Color getColor() 
      { 
         return myColor;
      }
      public double getRadius() 
      { 
         return myRadius;
      }
   // modifier methods
      public void setX(double x)
      {
         myX = x;
      } 
      public void setY(double y)
      {
         myY = y;
      } 
      public void setColor(Color c)
      {
         myColor = c;
      }
      public void setDiameter(double d)
      {
         myDiameter = d;
         myRadius = d/2;
      }
      public void setRadius(double r)
      {
         myRadius = r;
         myDiameter = 2*r;
      }
    //   instance methods
      public void jump(int rightEdge, int bottomEdge)
      {
         // moves location to random (x, y) within the edges
         myX = (Math.random()* (rightEdge-myDiameter) + myRadius);
         myY = (Math.random()* (bottomEdge-myDiameter) + myRadius);
      }
      public void draw(Graphics myBuffer, int bottomEdge) 
      {
         myBuffer.setColor(myColor);
         myBuffer.fillOval((int)(getX() - getRadius()), (int)((bottomEdge - getY())-getRadius()), (int)getDiameter(), (int)getDiameter());
      }
   }