[mcal]

I'm really stuck. I am making a quiz, where questions are stored in a binary file. The answers are stored in an array. My problem comes when i have to compare the answer entered by the user to the correct answer. The correct answers are stored in an array. I tried to do a for loop, but its not working. (Infact everything inside the for loop isn't working) Can someone pls help me because i really got stuck and i can't continue programming with such a problem. Thanks a lot. :-)

This is the code:

Code:

import java.awt.*;
import java.awt.event.*;
import java.awt.event.ActionListener.*;
import java.util.*;
import java.io.*;
import javax.swing.*;
import java.util.Calendar;
import java.awt.image.*;
import javax.imageio.*;

import java.io.File;
import java.io.FileOutputStream;
import java.io.DataOutputStream;
import java.io.FileNotFoundException;
import java.io.IOException;



 
public class GQ extends JFrame implements ActionListener {
    private static final int FRAME_WIDTH = 1024;
    private static final int FRAME_HEIGHT = 768;
    private static final int FRAME_X_ORIGIN = 0;
    private static final int FRAME_Y_ORIGIN = 0;
    
  
    
    AnswerStore answerStore = new AnswerStore();
    boolean timeForMore;
    
   
                     
       public GQ() {
        
      
        Container contentPane;  
        contentPane = getContentPane();

        JButton button1, button2, button3, button4, button5;
        
        setSize (FRAME_WIDTH, FRAME_HEIGHT);
        setTitle("Geography Quiz");
        setLocation(FRAME_X_ORIGIN, FRAME_Y_ORIGIN);
        
                
        button1 = new JButton("Plate Tectonics");
        button2 = new JButton("Rivers");
        button3 = new JButton("Rocks");
        button4 = new JButton("Quit");
        
        
        contentPane.add(button1);
        contentPane.add(button2);
        contentPane.add(button3);
        contentPane.add(button4);
    
        button1.addActionListener(this);
        button1.setActionCommand("b1");
        button2.addActionListener(this);
        button2.setActionCommand("b2");
        button3.addActionListener(this);
        button3.setActionCommand("b3");
        button4.addActionListener(this);
        button4.setActionCommand("b4");
        setDefaultCloseOperation(EXIT_ON_CLOSE);
        
      
}
    
    public static void main (String[] args) {
        
        JOptionPane.showMessageDialog(null, "This is a Geography Quiz");
        JOptionPane.showMessageDialog(null, "Good Luck");
 
        
            GQ frame = new GQ();
            frame.setVisible(true);
           
            new GQ();
            GQ File = new GQ();
            
      }
 
        String ac = event.getActionCommand();
        String[] question = null;
        String[] answers = null;
     
            
         if(ac.equals("b2")) {
            
		     
            question = readFile("rivers.dat");
            answers = answerStore.riverAnswers;
        
      
        
        } else if (ac.equals("b4")) {
            System.exit(0);
           }
          
        
         askQuestions(question, answers); 
       
       
    }
    
   public void stopAndShowResults() {
        
        timeForMore = false;  // used for countdown. 
    }
       
    
 public String[] readFile(String path) {
        StringBuilder sb = new StringBuilder();
        String separator = "\n";
        String question;
     try{

      File aFile  = new File( "rivers.dat" );
      // create an output stream to the file
      FileInputStream aFileInStream = new FileInputStream ( aFile );
      // create a data output stream to the file output stream
      DataInputStream aDataInStream = new DataInputStream ( aFileInStream );

     
         question   = aDataInStream.readUTF();
         aFileInStream.close();
         JOptionPane.showInputDialog(null,question);

       
     
    }
          catch( FileNotFoundException e )
      {
         System.out.println( e.getMessage() );
         System.exit(1);
      }    
      
      catch(IOException e)
      {
         System.out.println( e.getMessage() );
         System.exit(1);
      }
           
        return sb.toString().split("\\n");
    }
 

    public void askQuestions(String[] question, String[] answers) {
      
        int count = 0;
        int point = 0;
        
        
       for(int j = 0; j < question.length; j++) { // anything inside in this for loop isn't working.
            
        timeForMore = true;
           String input = JOptionPane.showInputDialog(null,question[j]);// shows questions in a dialog box together with input line
            
            JOptionPane.showInputDialog(null,question);
            if(answers[j].equals(input))
              { 
                
                count++;  // incrementing counter if entered answer is correct
                point++;
             }
            if(!timeForMore) // if time is over, the program executes the loop an stops asking questions.
                break; 
     }
         
          
      
       
    JOptionPane.showMessageDialog(null, "You answered " + count +
                                      " out of " + question.length +
                                      " questions correctly.");
            int percent = (count*100)/question.length;
        JOptionPane.showMessageDialog(null, "Your Geography Quiz score is " + percent + " % ");
           
           
class AnswerStore  {  // storing answers of each quiz in arrays
    String[] tectonicAnswers = {
        "Hellenic", "destructive", "100km", "Italy", "Wegner",
        "Mariana", "Sicily", "created", "constructive", "Mediterranean", "ggg",
        "ggg", "ggg"
    };
    
    String[] riverAnswers = {
        "Gorges", "Meanders", "Levees", "Yes", "Less Economic Developed Countries",
        "crescent shaped lakes", "More Economic Developed Countries", "No", "River Discharge", "No", "",
        "", ""
    };
    
    String[] rockAnswers = {
        "40km", "Igneous Rock", "Sedimentary", "Basalt", "Organic",
        "pressure", "Oolites", "Igneous", "dark black", "basalt", "",
        "", ""
    };


     }

}