/**
   A simple class that simulates a fair die.
   @author Jed Yang and friends, 2018-03-28
*/

import java.util.Random;

public class Die
{
   // class variable (static means shared amongst instances)
   private static int numberCreated = 0;

   // instance variables, private
   private final int sides;
   private int value;
   private final int serialNumber;
   // final means: no change after initialized
   private Random rand;

   public Die()
   {
      this(6);
   }

   public Die(int sides)
   {
      rand = new Random();
      this.sides = sides;
      value = 1;
      numberCreated++;
      serialNumber = numberCreated;
      System.out.println("Created die #" + numberCreated + " with " + sides + " sides.");
   }

   public void roll()
   {
      value = rand.nextInt(sides) + 1;
      System.out.println("Die #" + serialNumber + " is rolled.");
   }

   public int getValue()
   {
      return value;
   }

   public void setValue(int value)
   {
      if (value > sides || value <= 0)
      {
         System.err.println("Are you insane?");
      }
      else
      {
         this.value = value;
      }
   }

}