Question

The answer should be in JAVA.

You will design and implement two classes to support a client program, RockPaperScissorsGame.java, to simulate Rock-Paper-Scissors game.

Read and understand the client program to find out the requirements for the HandShape and Player classes.

The rules of the Rock-Paper-Scissors game are:

    Scissors✌️ beats Paper✋ that beats Rock✊ that beats Scissors✌️

Additionally, to simplify the game logic (and complexify a little bit the HandSahpe class) , two players cannot show the same hand shape.

The followings are some sample runs:

$java RockPaperScissorsGame
Alice shows Paper
Bob shows Scissors
Bob wins!

$java RockPaperScissorsGame
Alice shows Paper
Bob shows Rock
Alice wins!

$java RockPaperScissorsGame
Alice shows Scissors
Bob shows Rock
Bob wins!

RockPaperScissorsGame.java

public class RockPaperScissorsGame {

        public static void main(String[] args) {
                
                String[] handShapeName = {"Rock", "Paper", "Scissors"};
                
                HandShape handShape = new HandShape();
                
                Player player1 = new Player("Alice");
                Player player2 = new Player("Bob");

                System.out.println(player1.getName() + " shows " + handShapeName[player1.showHand(handShape)]);
                System.out.println(player2.getName() + " shows " + handShapeName[player2.showHand(handShape)]);         
                
                System.out.println(player1.findWinner(player2) + "  wins!");
        }
}

Answer 1

Program:

File name: RockPaperScissorsGame.java

//Include necessary header files

import java.util.ArrayList;

import java.util.Random;

//Define the HandShape class

class HandShape

{

   /*Declare the arratlist to store the handshapes*/

   ArrayList<String> Shapes=new ArrayList<String>();

   //Define the constructor

   HandShape()

   {

       //Call the method "add()"

       Shapes.add("Rock");

       Shapes.add("Paper");

       Shapes.add("Scissors");

   }

   //Define the function "getShape()"

   public String getShape()

   {

       //Object creation

       Random r = new Random();

       /*Randomly select a hand shape from list*/

       String shape= Shapes.get(r.nextInt(Shapes.size()));

        //Call the method "remove()"

        Shapes.remove(shape);

        //Return the shape

        return shape;

   }

}

//Define the player class

class Player

{

   //Variable declaration

   String name;

   String str;

   //Define the constructor

   Player(String name)

   {

       this.name=name;

   }

   //Define the method "setName()"

   public void setName(String name)

   {

       this.name=name;

   }

   //Define the method "getName()"

   public String getName()

   {

       //Return the player name

       return this.name;

   }

   //Define the method "showHand()"

   public int show_Hand(HandShape hs1)

   {

     

       //Call the method "getShape()"

       str=hs1.getShape();

       //If the shape is equal to Rock

       if(str=="Rock")

       {

            //Then, return the index of the handshape

           return 0;

       }

       //If the shape is equal to Paper

       else if(str=="Paper")

            //Then, return the index of the handshape

           return 1;

     

      //Otherwise

       else

           //Return the index of the handshape

           return 2;

   }

   //Define the function "find_Winner()"

   public String find_Winner(Player pla2)

   {

      //Check the condition

      if((this.str=="Scissors" &&       pla2.str=="Rock")||(this.str=="Paper" && pla2.str=="Scissors")||(this.str=="Rock" && pla2.str=="Paper"))

           //Return the player2 name

           return pla2.name;

      //Otherwise

       else

           //Return the other plyer name

           return this.name;

    

   }

}

//Define the class RockPaperScissorsGame

public class RockPaperScissorsGame

{

   //Define the "main()" method

   public static void main(String[] args)

   {

     //Print the statement

     System.out.println("$java RockPaperScissorsGame");

     //Declare the variables

     String[] handShapeName= {"Rock","Paper","Scissors"};

     //Create object for "HandShape" class

     HandShape hs=new HandShape();

     //Create object for "player" class

     Player p1=new Player("Alice");

     Player p2=new Player("Bob");

     

     //Print the result

System.out.println(p1.getName()+" shows "+handShapeName[p1.show_Hand(hs)]);

      //Print the result

System.out.println(p2.getName()+" shows "+handShapeName[p2.show_Hand(hs)]);

     

      //Print the winner

      System.out.println(p1.find_Winner(p2)+" wins!");

   }

}

Output: