Question

JAVA

We will write a psychic game program in which a player guesses a number randomly generated by a computer. For this project, we need 3 classes, Player, PsychicGame, and Driver. Description for each class is as following:

Project Folder Name: LB05

1. Player class

a.Input

- nickName : nick name of the player

- guessedNumber : a number picked for the player will be assigned randomly by a computer later.

b. Process

- constructor: asks a user player’s nickName using standard input, and initialize guessedNumber by 0.

- getNickName() : returns nickname.

- getGuessedNumber() : returns guessedNumber.

- play : get a computer-generated random number among 1 through 6, then display the message, “nickname has picked the number guessedNumber” using standard output.

c. Output

2. PsychicGame class

a. Input

- p1 : an object from Player class.

- originalNumber : a number generated randomly by a computer will be compared to a guessedNumber generated by a player.

b. Process

- constructor: initialize an object of Player class, then initialize the originalNumber as 0.

- play : assign a computer-generated random number from 1 to 6 to the originalNumber, display a message, “ The computer has chosen the number originalNumber”, lets the Player class object pick its number, then compare these two numbers. If the numbers are matched, then display a message, “player’s nickname has won.”, or “No one has won this time.”

c.Output

3. Driver class

This is the driver class which runs this application by the main method. However, at the very beginning, please display a header mentioning whose psychic game is by standard output.

Answer 1

JAVA PROGRAM

Driver class

package LB05;

//This is Driver class to test the PsychicGame
public class Driver {
   public static void main(String[] args){
       System.out.println("XYZ's Psychic game"); //XYZ is a random name taken for program purpose
      
       PsychicGame pg = new PsychicGame(); //PsychicGame instance is created
      
       pg.play();//play() method is called
      
   }

}

PsychicGame class

package LB05;

//Psychic game class
public class PsychicGame {
   private Player p1;
   private int originalNumber;
     
   //constructor
   public PsychicGame(){
       this.p1 = new Player();//Player is initialized
       this.originalNumber = 0;//originalNumber is initialized to 1
   }
     
   public void play(){
       //Random number between 1 and 6 will be generated by below statement.
       // Math.random() will generate anything >= 0 but <1
       //Math.random() will generate anything >= 0 but < 5
       //With the use of Math.round and addition of 1 any integer between 1 and 6 can be generated
       this.originalNumber = 1+ Math.round((float)Math.random()*5);
         
       System.out.println("The computer has chosen the number "+this.originalNumber);
       //this will call player's play() method
       this.p1.play();
         
       //below logic will check whether computer generated number and player's guessed number matched or not
       if(this.originalNumber == this.p1.getGuessedNumber()){
           System.out.println("Player's "+this.p1.getNickName()+ " has won.");
       }else{
           System.out.println("No one has won this time.");
       }
   }

}

Player class

package LB05;

import java.util.Scanner;

//Player class
public class Player {
   private String nickName;
   private int guessedNumber;
  
   //Constructor
  
   public Player(){
       Scanner in = new Scanner(System.in);
       System.out.println("Please enter nickname:");
       this.nickName = in.next(); //User nickname will be taken through scanner
       in.close();//scanner needs to be closed after it's done
       this.guessedNumber = 0;//guessedNumber is initialized to 0.
   }
  
   //getter for nickName
   public String getNickName(){
       return this.nickName;
   }
  
   //getter for guessedNumber
   public int getGuessedNumber(){
       return this.guessedNumber;
   }
  
   /**
   * This method will let the player pick any number between 1 to 6 and display it.
   */
   public void play(){
       //Random number between 1 and 6 will be generated by below statement.
       // Math.random() will generate anything >= 0 but <1
       //Math.random() will generate anything >= 0 but < 5
       //With the use of Math.round and addition of 1 any integer between 1 and 6 can be generated
       this.guessedNumber = 1+ Math.round((float)Math.random()*5);
      
       System.out.println(this.nickName+" has picked the number "+this.guessedNumber);
   }
}

Output:

Run1:

XYZ's Psychic game
Please enter nickname:
hero
The computer has chosen the number 5
hero has picked the number 1
No one has won this time.

Run2:

XYZ's Psychic game
Please enter nickname:
zero
The computer has chosen the number 3
zero has picked the number 5
No one has won this time.

Run3:

XYZ's Psychic game
Please enter nickname:
bob
The computer has chosen the number 2
bob has picked the number 2
Player's Bob has won.

Explanation:

Code comments are given with the code.
Generation of random number between 1 and 6 has been explained in the section where the random number is generated and assigned.