import java.util.Random;  //Warn Java we want to use Random

/**
 * The Die class models a die of the sort you'd roll:  It
 * can be created with as many sides as you wish, and has
 * a roll method that returns an appropriate random result.
 * 
 * @author Brad Richards
 */
public class Die
{
    private int numSides;
    private Random rng;
    
    /**
     * Constructor for objects of class Die.  The default constructor
     * (this one, since it takes no parameters) will create a six-sided
     * die.
     */
    public Die()
    {
        numSides = 6;
        rng = new Random();
    }
    
    /**
     * This constructor creates a Die object with the specified number
     * of sides.
     * @param sides  The desired number of sides.
     */
    public Die(int sides)
    {
        numSides = sides;
        rng = new Random();
    }
    
    /**
     * An accessor method that returns this Die's number of sides.
     * @return  The die's number of sides.
     */
    public int getNumSides()
    {
        return numSides;
    }

    /**
     * Simulates a roll of this Die instance.  Picks a random value
     * in the appropriate range and returns it.
     * @return  A randomly rolled value.
     */
    public int roll()
    {
        int rolledValue;
        rolledValue = rng.nextInt(numSides)+1;
        return rolledValue;
    }
}