Question

Classes/ Objects(programming language java ) in software (ATOM) Write a Dice class with three data fields...

Classes/ Objects(programming language java ) in software (ATOM)

Write a Dice class with three data fields and appropriate types and permissions

  • diceType
  • numSides
  • sideUp

The class should have

  • A 0 argument (default) constructor
    • default values are diceType: d6, numSides: 6, sideUp: randomValue
  • 1 argument constructor for the number of sides
    • default values are diceType: d{numSides}, sideUp: randomValue
  • 2 argument constructor for the number of sides and the diceType
  • appropriate accessors and mutators *theoretical question: can you change the number of sides on dice, and if you do does it's name change?
  • a roll method to generate a random value. If I play D&D with you and your dice are always rolling high or max, I'm going to be suspicious

Write a DiceGame program to test each your Dice class

  • create different sized dice using different constructors
  • roll dice
  • set a dice to a specific side up
  • BONUS: create 5 six-sided dice. Roll them in a loop until you get a cold-Yahtzee (5 of a kind with one roll). How many rolls did it take?

Checklist

  • 3 data fields (1)
  • 3 constructors (1 each = 3)
  • accessors and mutators (0.5 each = 3)
  • roll (1)
  • successfully tests a variety of methods (2)
  • If I try your app and one of the following things happens, you get 100% (no cheating)
    • I create a dice object with 20 sides and it rolls 20 the first time
    • The cold-Yahtzee happens on the first roll   NOTE-(Give a code review of about 3 or 4 lines in the form of paragraph. )   

Homework Answers

Answer #1

The Java Code for the program is as follows:

It has three different Constructor

  • Default Contructor which sets the instance variable as diceType as "d6", numSides as 6 and sideUp as random Value
  • Constructor with "Number of Sides" as parameter will set the class attributes repectively.
  • Contructor with two parameters will set the class attributes respectively

The below Code only validate the following conditions:

  • creating different sized dice using different constructors
  • roll dice
  • set a dice to a specific side up
import java.util.*;

class Dice{
        private String diceType;
        private int numSides;
        private int sideUp;
        private Random random = new Random();
        private int NumberOfRolls = 0;

        // Constructors 
        // zero value constructor
        Dice(){
                diceType = "d6";
                numSides = 6;
                sideUp = 1 + random.nextInt(6);
        }

        // Constructor for Number of sides as parameter
        Dice(int numSides){
                this.numSides = numSides;
                this.diceType = "d"+numSides;
                this.sideUp =  1 + random.nextInt(numSides);
        }

        // Constructor for Dice Type and Number of Sides as parameters
        Dice(String diceType, int numSides){
                this.diceType = diceType;
                this.numSides = numSides;
                this.sideUp = 1 + random.nextInt(numSides);
        }

        // Accessors 
        public int getNumberOfSides(){
                return numSides;
        }

        public int getNumberOfRolls(){
                return NumberOfRolls;
        }

        public String getDiceType(){
                return diceType;
        }

        public int getSideUp(){
                return sideUp;
        }

        // Mutators

        public void setDiceType(String diceType){
                this.diceType = diceType;
        }

        public void setNumberOfSides(int numSides){
                this.numSides = numSides;
        }

        public void setSideUp(int value){
                if(value < numSides && value > 0){
                        this.sideUp = value;
                }else{
                        this.sideUp = 1 + random.nextInt(numSides);
                }
        }
        // This method returns a random number between 1 and Number of Sides (numSides)
        public int roll(){
     ++NumberOfRolls;
     return 1 + random.nextInt(numSides);
   }
}

// Main Class to test each Dice Constructor
public class DiceTest
{
    public static void main(String[] args)
    {
       
        Dice dice1 = new Dice();
        Dice dice2 = new Dice(8); 
        Dice dice3 = new Dice("d7",7);
        System.out.println("Rolling the first Dice Which has "+ dice1.getNumberOfSides() + " Sides");
        System.out.println("Before setting the sidesUp of the Dice, The SideUp is "+ dice2.getSideUp());
        dice2.setSideUp(2);
        System.out.println("After setting the SideUp of the Dice, The Side up is "+dice2.getSideUp());
        
    }
}

As I told you already that the above code does not validate the BONUS condition:

The below Code will Validate the BONUS Condition(Cold-Yahtzee):

import java.util.*;

class Dice{
        private String diceType;
        private int numSides;
        private int sideUp;
        private Random random = new Random();
        private int NumberOfRolls = 0;

        // Constructors 
        // zero value constructor
        Dice(){
                diceType = "d6";
                numSides = 6;
                sideUp = 1 + random.nextInt(6);
        }

        // Constructor for Number of sides as parameter
        Dice(int numSides){
                this.numSides = numSides;
                this.diceType = "d"+numSides;
                this.sideUp =  1 + random.nextInt(numSides);
        }

        // Constructor for Dice Type and Number of Sides as parameters
        Dice(String diceType, int numSides){
                this.diceType = diceType;
                this.numSides = numSides;
                this.sideUp = 1 + random.nextInt(numSides);
        }

        // Accessors 
        public int getNumberOfSides(){
                return numSides;
        }

        public int getNumberOfRolls(){
                return NumberOfRolls;
        }

        public String getDiceType(){
                return diceType;
        }

        public int getSideUp(){
                return sideUp;
        }

        // Mutators

        public void setDiceType(String diceType){
                this.diceType = diceType;
        }

        public void setNumberOfSides(int numSides){
                this.numSides = numSides;
        }

        public void setSideUp(int value){
                if(value < numSides && value > 0){
                        this.sideUp = value;
                }else{
                        this.sideUp = 1 + random.nextInt(numSides);
                }
        }
        // This method returns a random number between 1 and Number of Sides (numSides)
        public int roll(){
     ++NumberOfRolls;
     return 1 + random.nextInt(numSides);
   }
}



// Testing Class to validate the Cold-Yahtzee
public class DiceTest
{
    public static void main(String[] args)
    {
       
        Dice dice1 = new Dice(6);
        Dice dice2 = new Dice(6); 
        Dice dice3 = new Dice(6);
        Dice dice4 = new Dice(6);
        Dice dice5 = new Dice(6);
      
        int roll1 = dice1.roll();
        int roll2 = dice2.roll(); 
        int roll3 = dice3.roll(); 
        int roll4 = dice4.roll();
        int roll5 = dice5.roll();
        while(true){
                if(roll1 == roll2 && roll1 == roll3 && roll1 == roll4 && roll1 == roll5){
                        System.out.println("Bingo Cold-Yahtzee happens on the " + dice1.getNumberOfRolls()+" rolls");
                        break;
                }else{
                        System.out.printf("%d %d %d %d %d \n", roll1, roll2, roll3, roll4, roll4);
                        roll1 = dice1.roll();
                        roll2 = dice2.roll();
                        roll3 = dice3.roll(); 
                        roll4 = dice4.roll();
                        roll5 = dice5.roll();
                }
        }
    }
}

Hope this helps you.

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