Class

import java.util.Random;



public class Main {



    public static void main(String[] args) {

        Die d6 = new Die(6);    // 6 sided-die

        Die d12 = new Die(12);  // 12 sided-die

        Die skullCrusher = new Die(20);

        System.out.printf("Rolling %d sided die : %d\n", d6.getSides(), d6.roll());

        System.out.printf("Rolling %d sided die : %d\n", d12.getSides(), d12.roll());

        System.out.printf("Rolling %d sided die : %d\n", skullCrusher.getSides(), skullCrusher.roll());

    }

}



/**

 * Different sided die simulation

 */

final class Die {



    private int _sides;

    private int _value;

    private Random _generator;



    // this is the constructor, called when you "new" the class.

    public Die(int sides) {

        this._sides = sides;

        this._generator = new Random();

        this.roll();    // roll it so it gets a value.

    }



    // overload, to pass in an existing seed

    public Die(int sides, int seed) {

        this._sides = sides;

        this._generator = new Random(seed);

        this.roll();    // roll it so it gets a value.

    }



    // get the number of sides on the die

    public int getSides() {

        return _sides;

    }



    // change the number of sides on the die

    public int setSides(int sides) {

        this._sides = sides;

        return _sides;

    }



    // simulates a dice roll

    public int roll() {

        _value = _generator.nextInt(_sides) + 1;

        return _value;

    }



    // get value showing on die

    public int getValue() {

        return _value;

    }



}