Question

Problem Statement: Mini Lottery.

This mini lottery company caters to regular players and high rollers. It allows the regular players and the high rollers to add money to the jackpot. It can select a random set of players and awards them the jackpot money.

The app must repeatedly do the following:

         Display the list of players. Allow the user to (1) add a player (2) have one player add money to the jackpot (3) select one or more random players and award them the jackpot money (4) exit the app.   

Super class (abstract class)

Player:
data members –
private String name - The name of the player
private int purse - The amount of money the player has
private static double jackpot – Total money in play so far

Two subclasses, both extend Player

RegularPlayer:
instance variable–private double max – Maximum amount of money that the player can play
HighRoller:
instance variable– private double comp – an amount of money that the company credits the player with on each play

Required abstract method
void play(double amount): Declared in class Player; Implemented in RegularPlayer and HighRoller.

In class RegularPlayer:

• play(double amount): If the amount parameter is less than or equal to 0, do nothing and return. If the amount parameter is greater than purse or greater than max, do nothing and return. If not, subtract the value of amount from purse and add the value of amount to jackpot.

In class HighRoller:

• play(double amount): If the amount parameter is less than or equal to 0, do nothing and return. If the amount parameter is greater than purse, do nothing and return. If not, subtract the value of amount from purse, add the value of amount to jackpot, and add the value of comp to purse.

• In the Tester class:

  • main():

  • Set up a single ArrayList of RegularPlayer objects and HighRoller objects. For a total of about 6 objects.

  • Have a menu with four options (1) add a player (2) have one player add money to the jackpot (3) select one or more random players and award them the jackpot money (4) exit the app. Hint - You may use a do...while loop and a switch statement

  • Display the array list to the user

  • If the user enters 1, add a new RegularPlayer or a new HighRoller object to the list. Use the add() method to add to the list.

  • If the user enters 2, ask them for the index of the player that wants to play and the amount of money that they want to play. Use the play() method.

  • If the user enters 3, generate a random number, winners, between 1 and the size of the list of players. Distribute the jackpot money evenly over winners players, and set jackpot to 0. For example, if winners = 4 and jackpot = $1000, pick 4 random players from the list and add $250 to the purse of each of these players.

  • If the user enters 4, terminate the program. Otherwise, take them back to the menu so they can make another selection.

Special Note: Please complete in Java using BlueJ and make the code as simple as possible. Please provide notes for understanding. Thank you.

Answer 1

//Java code

/**
 * Super class (abstract class)
 */
public abstract class Player {
    //data members –
    protected String name;//- The name of the player
    protected int purse;// - The amount of money the player has
    protected static double jackpot;// – Total money in play so far
    //constructor

    public Player(String name, int purse) {
        this.name = name;
        this.purse = purse;
    }
    //abstract method
    public abstract void play(double amount);
    //getters

    public String getName() {
        return name;
    }

    public int getPurse() {
        return purse;
    }

    public static double getJackpot() {
        return jackpot;
    }
    //setters

    public void setName(String name) {
        this.name = name;
    }

    public void setPurse(int purse) {
        this.purse = purse;
    }

    public static void setJackpot(double jackpot) {
        Player.jackpot = jackpot;
    }

    @Override
    public String toString() {
        return "Player Name: "+name+" Amount in purse: $"+String.format("%d",purse)+" ";
    }
}

//============================================

public class RegularPlayer extends Player {
    /**
     * instance variable–private double max
     * – Maximum amount of money that the player can play
     */
    private double max;

    public RegularPlayer(String name, int purse, double max) {
        super(name, purse);
        this.max = max;
    }
    //getter and setter

    public double getMax() {
        return max;
    }

    public void setMax(double max) {
        this.max = max;
    }

    /**
     * If the amount parameter is less than or equal to 0,
     * do nothing and return. If the amount parameter
     * is greater than purse or greater than max, do nothing and return.
     * If not, subtract
     * the value of amount from purse and add the value of amount to jackpot.
     * @param amount
     */
    @Override
    public void play(double amount) {
        if(amount<=0)
            return;
        else if(amount>getPurse()|| amount>max)
            return;
        else
        {
            purse-=amount;
            jackpot+=amount;
        }
    }

    @Override
    public String toString() {
        return super.toString()+"Maximum amount of money to play game: $"+String.format("%.2f",max);
    }
}

//==========================================

public class HighRoller extends Player {
    /**
     * instance variable– private double comp –
     * an amount of money that the company credits the player with on each play
     */
    private double comp;


    //constructor

    public HighRoller(String name, int purse, double comp) {
        super(name, purse);
        this.comp = comp;
    }
    //getters and setter

    public double getComp() {
        return comp;
    }

    public void setComp(double comp) {
        this.comp = comp;
    }

    /**
     *  If the amount parameter is less than or equal to 0,
     *  do nothing and return. If the amount parameter is greater
     *  than purse, do nothing and return. If not,
     *  subtract the value of amount from purse,
     *  add the value of amount to jackpot,
     *  and add the value of comp to purse.
     * @param amount
     */
    @Override
    public void play(double amount) {
        if(amount<=0)
            return;
        else if(amount>getPurse())
            return;
        else
        {
           purse-=amount;
           jackpot+=amount;
           purse+=comp;
        }
    }

    @Override
    public String toString() {
        return super.toString()+" credit amount $"+String.format("%.2f",comp);
    }
}

//===========================================

import java.util.ArrayList;
import java.util.Random;
import java.util.Scanner;

public class Main {
    public static void main(String[] args)
    {
        /**
         * single ArrayList of RegularPlayer objects and HighRoller objects.
         * For a total of about 6 objects.
         */
        ArrayList<Player> players = new ArrayList<>();
        players.add(new RegularPlayer("Bob",200,100));
        players.add(new HighRoller("Jack",500,200));
        players.add(new RegularPlayer("Mike",450,300));
        /**
         * Have a menu with four options
         * (1) add a player (2) have one player add money to the jackpot (3) select one or more random players and award them the jackpot money (4) exit the app.
         * Hint - You may use a do...while loop and a switch statement
         */
        //To get random numbers
        Random random = new Random();
        int choice=0;
        Scanner input = new Scanner(System.in);
        boolean again=true;
        String name="";
        int purseAmount=0;
        int playerIndex=0;
        double maxAmount=0,creditAmount=0,playAmount=0;
        do {
            //Display the array list to the user
            displayPlayers(players);
            menu();

            choice =input.nextInt();
            switch (choice)
            {
                /**
                 * If the user enters 1, add a new
                 * RegularPlayer or a new HighRoller object to the list.
                 * Use the add() method to add to the list.
                 */
                case 1:
                    System.out.println("1.Regular user\n2. HighRoller User\nSelect your choice: ");
                    choice=input.nextInt();
                    input.nextLine();
                    if(choice==1)
                    {
                        System.out.print("Enter Name: ");
                        name =input.nextLine();
                        System.out.print("Enter purse amount: ");
                        purseAmount = input.nextInt();
                        System.out.print("Enter maximum Amount to play: ");
                        maxAmount = input.nextDouble();
                        players.add(new RegularPlayer(name,purseAmount,maxAmount));
                        System.out.println("Player created successfully..");
                    }
                    else if(choice==2)
                    {

                        System.out.print("Enter Name: ");
                        name =input.nextLine();
                        System.out.print("Enter purse amount: ");
                        purseAmount = input.nextInt();
                        System.out.print("Enter credit Amount to play: ");
                        creditAmount = input.nextDouble();
                        players.add(new HighRoller(name,purseAmount,creditAmount));
                        System.out.println("Player created successfully..");
                    }

                    else
                    {
                        System.out.println("Wrong choice...!!!");
                    }
                    break;
                /**
                 * If the user enters 2, ask them for the index of
                 * the player that wants to play
                 * and the amount of money that they want to play.
                 * Use the play() method.
                 */
                case 2:
                        System.out.print("Enter player index: ");
                        playerIndex = input.nextInt();
                        if(playerIndex>=players.size()||playerIndex<0)
                            System.out.print("This player number does not exist");
                        else
                        {
                            System.out.print("Enter amount of money to play game: $");
                            playAmount = input.nextDouble();
                            players.get(playerIndex).play(playAmount);
                        }
                    break;
                /**
                 * If the user enters 3,
                 * generate a random number, winners,
                 * between 1 and the size of the list of players.
                 * Distribute the jackpot money evenly over winners players,
                 * and set jackpot to 0. For example, if winners = 4
                 * and jackpot = $1000, pick 4 random players
                 * from the list and add $250 to the purse of each of these players.
                 */
                case 3:
                    int randomWinners = random.nextInt(players.size())+1;
                    System.out.println("There are total "+randomWinners+" players, who wins jackpot..");
                    double prizeMoney = Player.getJackpot()/randomWinners;
                    //get random winners from list
                    for (int i = 0; i < randomWinners; i++) {
                        int randomWinner = random.nextInt(players.size());
                        System.out.println(players.get(randomWinner).getName()+"\ngot jackpot of $"+String.format("%.2f",prizeMoney));
                        //add money to purse
                        double money = players.get(randomWinner).getPurse()+prizeMoney;
                        players.get(randomWinner).setPurse((int)money);
                    }
                    System.out.println("Congratulations to all winners........");
                    break;
                case 4:
                    again = false;
                    break;

                    default:
                        System.out.println("Wrong Choice... Try Again...");
                        break;
            }
        }while (again);

    }
    public static void menu()
    {
        System.out.println("(1) add a player \n(2) have one player add money to the jackpot" +
                " \n(3) select one or more random players and award them the jackpot money \n(4) exit the app" +
                "\nSelect an Option: ");
    }
    public static void displayPlayers(ArrayList<Player>players)
    {
        System.out.println("List of players: ");
        for (Player p:players
             ) {
            System.out.println(p);
        }
    }
}

//output

//If you need any help regarding this solution ........ please a comment ...... thanks