Question

This is the code I have written for my Java homework assignment but I can't seem...

This is the code I have written for my Java homework assignment but I can't seem to get it to run. Any help would be appreciated!

import javax.swing.JOptionPane;
import java.io.*;
import java.util.Scanner;
public class javaGamev5 {
   public static void main(String[] args) throws IOException
   {
      String question = null, answerA = null, answerB = null, answerC = null ;
      int menuChoice = 0, correctAnswer = 0, points = 0, score = 0, highscore = 0;
      displayIntro();
      do {
      menuChoice = displayMainMenu();
      if (menuChoice == 1)
      {
         displayRules();
      }
      else if (menuChoice == 2)
      {
         //Declare a File object
         File inFile = new File ("questions.txt");
         //Declare Scanner
         Scanner in = new Scanner(inFile);
         for(int i = 1; i<=8;i++)
         {
            question = in.nextLine();
            answerA = in.nextLine();
            answerB = in.nextLine();
            answerC = in.nextLine();
            
            correctAnswer = in.nextInt();
            in.nextLine();
            points = in.nextInt();
            in.nextLine();
            score+=processQuestion(question, answerA, answerB, answerC, points, correctAnswer);
            displayScore(score);
         }
         in.close();
         highscore = readInHighScore();
         compareScore(highscore, score);
         JOptionPane.showMessageDialog(null, "Thanks for playing!");
      }
      else if (menuChoice == 3)
      {
         System.exit(0);
      }
      }while(menuChoice!=3);
   }  
   //Return type: int
   //Parameters: None
   //Purpose: Display intro and prompt user for name and greet them by name
   public static void displayIntro()
   {
      String name = null;
      // Display an Introduction to the Game.
      JOptionPane.showMessageDialog(null,"\n Welcome to Who Wants to Be a Java Programmer! ");  
      //Use an input dialog box to prompt the user for his/her name. 
      name= JOptionPane.showInputDialog("\n Please enter your name: "); 
      //Use an message dialog box to say hello. 
      JOptionPane.showMessageDialog(null,"\n Hello " + name + "!");
   }
   //Return type: char
   //Parameters: None
   //Purpose: To display main menu and prompt user for their choice and validate. Method returns menu choice
   public static int displayMainMenu()
   {
      String input = null;
      int menuChoice = 0;
      do
          {
        input = JOptionPane.showInputDialog("\n =====  Main Menu: =====\n >>> Enter 1 to See Rules"
          + "\n >>> Enter 2 to  Play Game\n >>> Enter 3 to  Exit Game\n"
          + "\n Please select an option from the main menu: ");
        menuChoice = int.parseInt(input);
        if (menuChoice < 1 || menuChoice > 3)
        {
           JOptionPane.showMessageDialog(null, "Invalid input! Please enter a number from 1-3 for your menu choice.");
        }
          }while(menuChoice < 1 || menuChoice > 3);
      return menuChoice;
   }
   //Return type: void
   //Parameters: None
   //Purpose: To display the rules of the game
   public static void displayRules()
   {
      JOptionPane.showMessageDialog(null, "\n =====Game Rules===== \n You will be asked 10 questions "
                + "\n If answered correctly, you will receive however many points each question is worth. "
                + "\n If answered incorrectly, you will not receive any points.\n"
                + "\n These questions will be multiple choice, by which you will use the corresponding letters (A, B or C) to choose your answer .\n");
   }
   //Return type: int
   //Parameters: 5 Strings and 2 ints
   //Purpose: To display the question and prompt for answer choice and validate. Returns the points the user earned depending on if they were correct or incorrect
   public static int processQuestion(String q1, String ansA, String ansB, String ansC,  int pointValue, int correctAns) throws IOException
    {
      int answerChoice = 0;
      String input = null;
      do 
      {
         input = JOptionPane.showInputDialog(null, q1 + "\n" + "1. " + ansA + "\n" + "2. " + ansB + "\n" + "3. " + ansC + "\n" );
         answerChoice = Integer.parseInt(input);
         if (answerChoice < 1 || answerChoice > 3)
          {
             JOptionPane.showMessageDialog(null, "Invalid input! Please enter a number from 1-3.");
          }
      }while (answerChoice < 1 || answerChoice > 3);
      if (answerChoice == correctAns)
      {
         JOptionPane.showMessageDialog(null, "You are correct!");
         return pointValue;
      }
      else 
      {
         JOptionPane.showMessageDialog(null, "Incorrect! Try again");
         return 0;
      }
    }
   //Return type: int
   //Parameters: None
   //Purpose: To read in the highscore from text file and return that value
   public static int readInHighScore() throws IOException 
   {
      int highscore = 0;
      File outFile = new File ("highscore.txt"); // This is to open the highscore file to compare with user score
      Scanner currentScore = new Scanner(outFile); // This is to read in the current highscore to compare with user score
      highscore = currentScore.nextInt();
      currentScore.close();
      return highscore;
   }
   //Return type: void
   //Parameters: 2 ints
   //Purpose: To compare the user score to highscore and update the highscore file if user attained high score
   public static void compareScore(int highScore, int userScore) throws IOException
   {
      if (userScore > highScore)
      {
         //Declare a PrintWriter object for output
         PrintWriter out = new PrintWriter("highscore.txt"); 
         out.print(userScore);
         out.close();
      }
   }
   //Return type: void
   //Parameters: 1 int
   //Purpose: To display the user's score
   public static void displayScore(int score)
   {
      JOptionPane.showMessageDialog(null, "Your total score is: " + score);
   }
}
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Homework Answers

Answer #1

I am not sure what issue you were getting but i am able to run the code with slight changes. I have updated the code and pasted below. Also i have attached output screenshots.

Here is the code.

import javax.swing.JOptionPane;
import java.io.*;
import java.util.Scanner;

public class javaGamev5 {
   public static void main(String[] args) throws IOException {
       String question = null, answerA = null, answerB = null, answerC = null;
       int menuChoice = 0, correctAnswer = 0, points = 0, score = 0, highscore = 0;
       displayIntro();
       do {
           menuChoice = displayMainMenu();
           if (menuChoice == 1) {
               displayRules();
           } else if (menuChoice == 2) {
               // Declare a File object
               File inFile = new File("questions.txt");
               // Declare Scanner
               Scanner in = new Scanner(inFile);
               for (int i = 1; i <= 8; i++) {
                   if(in.hasNextLine()) {
                       question = in.nextLine();
                       answerA = in.nextLine();
                       answerB = in.nextLine();
                       answerC = in.nextLine();

                       correctAnswer = in.nextInt();
                       in.nextLine();
                       points = in.nextInt();
                       in.nextLine();
                       score += processQuestion(question, answerA, answerB, answerC, points, correctAnswer);
                       displayScore(score);
                   }
               }
               in.close();
               highscore = readInHighScore();
               compareScore(highscore, score);
               JOptionPane.showMessageDialog(null, "Thanks for playing!");
           } else if (menuChoice == 3) {
               System.exit(0);
           }
       } while (menuChoice != 3);
   }

   // Return type: int
   // Parameters: None
   // Purpose: Display intro and prompt user for name and greet them by name
   public static void displayIntro() {
       String name = null;
       // Display an Introduction to the Game.
       JOptionPane.showMessageDialog(null, "\n Welcome to Who Wants to Be a Java Programmer! ");
       // Use an input dialog box to prompt the user for his/her name.
       name = JOptionPane.showInputDialog("\n Please enter your name: ");
       // Use an message dialog box to say hello.
       JOptionPane.showMessageDialog(null, "\n Hello " + name + "!");
   }

   // Return type: char
   // Parameters: None
   // Purpose: To display main menu and prompt user for their choice and validate.
   // Method returns menu choice
   public static int displayMainMenu() {
       String input = null;
       int menuChoice = 0;
       do {
           input = JOptionPane.showInputDialog("\n ===== Main Menu: =====\n >>> Enter 1 to See Rules"
                   + "\n >>> Enter 2 to Play Game\n >>> Enter 3 to Exit Game\n"
                   + "\n Please select an option from the main menu: ");
           menuChoice = Integer.parseInt(input);
           if (menuChoice < 1 || menuChoice > 3) {
               JOptionPane.showMessageDialog(null,
                       "Invalid input! Please enter a number from 1-3 for your menu choice.");
           }
       } while (menuChoice < 1 || menuChoice > 3);
       return menuChoice;
   }

   // Return type: void
   // Parameters: None
   // Purpose: To display the rules of the game
   public static void displayRules() {
       JOptionPane.showMessageDialog(null, "\n =====Game Rules===== \n You will be asked 10 questions "
               + "\n If answered correctly, you will receive however many points each question is worth. "
               + "\n If answered incorrectly, you will not receive any points.\n"
               + "\n These questions will be multiple choice, by which you will use the corresponding letters (A, B or C) to choose your answer .\n");
   }

   // Return type: int
   // Parameters: 5 Strings and 2 ints
   // Purpose: To display the question and prompt for answer choice and validate.
   // Returns the points the user earned depending on if they were correct or
   // incorrect
   public static int processQuestion(String q1, String ansA, String ansB, String ansC, int pointValue, int correctAns)
           throws IOException {
       int answerChoice = 0;
       String input = null;
       do {
           input = JOptionPane.showInputDialog(null,
                   q1 + "\n" + "1. " + ansA + "\n" + "2. " + ansB + "\n" + "3. " + ansC + "\n");
           answerChoice = Integer.parseInt(input);
           if (answerChoice < 1 || answerChoice > 3) {
               JOptionPane.showMessageDialog(null, "Invalid input! Please enter a number from 1-3.");
           }
       } while (answerChoice < 1 || answerChoice > 3);
       if (answerChoice == correctAns) {
           JOptionPane.showMessageDialog(null, "You are correct!");
           return pointValue;
       } else {
           JOptionPane.showMessageDialog(null, "Incorrect! Try again");
           return 0;
       }
   }

   // Return type: int
   // Parameters: None
   // Purpose: To read in the highscore from text file and return that value
   public static int readInHighScore() throws IOException {
       int highscore = 0;
       File outFile = new File("highscore.txt"); // This is to open the highscore file to compare with user score
       Scanner currentScore = new Scanner(outFile); // This is to read in the current highscore to compare with user
                                                       // score
       highscore = currentScore.nextInt();
       currentScore.close();
       return highscore;
   }

   // Return type: void
   // Parameters: 2 ints
   // Purpose: To compare the user score to highscore and update the highscore file
   // if user attained high score
   public static void compareScore(int highScore, int userScore) throws IOException {
       if (userScore > highScore) {
           // Declare a PrintWriter object for output
           PrintWriter out = new PrintWriter("highscore.txt");
           out.print(userScore);
           out.close();
       }
   }

   // Return type: void
   // Parameters: 1 int
   // Purpose: To display the user's score
   public static void displayScore(int score) {
       JOptionPane.showMessageDialog(null, "Your total score is: " + score);
   }
}

--------------------------------------------------------OUTPUT------------------------------------------------------------

Please upvote if my answered helped you.

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