Driver

package com.gabrielruiu.test;

import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.File;
import java.io.FileNotFoundException;
import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;

public class Driver {

    int i;

    List<String> lines;
    String s = "Welcome Students!";
    String b = "Start!";
    private JFrame f;

    private JPanel p;

    JFrame frame = new JFrame();

    JButton b1 = new JButton(b);

    JLabel jl = new JLabel(s);

    private int clicked;

    public Driver() {
        gui();
    }

    public void gui() {
        lines = readLinesFromFile();
        i = 0;
        f = new JFrame("Flash Card Program");
        p = new JPanel();
        f.setLayout(new GridLayout(2, 1));
        f.add(jl);
        f.add(p);
        p.setLayout(new GridLayout(2, 1));
        p.add(b1);

        jl.setHorizontalAlignment(JLabel.CENTER);

        // pack the frame for better cross platform support
        f.pack();
        // Make it visible
        f.setVisible(true);
        f.setSize(500, 400); // default size is 0,0
        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        b1.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                jl.setText(lines.get(i));
                i++;
                if ( i > lines.size()-1 ) {
                    i = 0;
                }
                if (b1.getText().equals("Click For Answer")) {
                    b1.setText("Next Question");
                } else {
                    b1.setText("Click For Answer");
                }
            }
        });


        b1.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {

                if (clicked++ == 10) {

                    Object[] options = { "No, thanks", "Yes, please" };

                    int response = JOptionPane.showOptionDialog(frame,
                            "Would you like more math questions? ",
                            "Math Questions", JOptionPane.YES_NO_CANCEL_OPTION,
                            JOptionPane.QUESTION_MESSAGE, null, options,
                            options[1]);

                    if (response == 1)
                        clicked = 1; // reset
                    else
                        System.exit(0);
                }
            }
        });
    }


    public static List<String> readLinesFromFile() {
        List<String> lines = new ArrayList<String>();
        try {
            Scanner scanner = new Scanner(new File("upload.txt"));
            while (scanner.hasNext()){
                lines.add(scanner.nextLine());
            }
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        }
        return lines;
    }


    public static void main(String[] args) {
        EventQueue.invokeLater(new Runnable() {
            @Override
            public void run() {
                new Driver();
            }
        });
    }
}