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    Simple java gui quiz


    I'm trying to make a simple java gui quiz game. I'm making this game so I can input information to help me study for various subjects. I want this program just to ask about 20 questions multiple choice, and at the end tell you how many you got right and your percentage. Everything is going well except for the fact that I can figure out how to make the program go to the next question. I can get it to show the first question and then say if its right or wrong but it wont go on to the next question. Here's the code thanks in advance.


    PS. I know I didn't do the if, else if for the second question I just want to make sure the second question shows up first. Also I know that there might be an easier way then inputting all the questions and answers like that but I don't mind, because as I manually input the questions and answers I get a chance to learn them as well.

    import javax.swing.*;
    import java.awt.event.*;

    public class quiz2 extends JFrame
    {
    private JButton anwser1;
    private JButton anwser2;
    private JButton anwser3;
    private JButton anwser4;
    private JPanel panel;
    private JLabel messageLabel;
    private JLabel messageLabel2;
    private final int WINDOW_WIDTH = 300;
    private final int WINDOW_HEIGHT = 120;
    int c = 0;

    public quiz2()
    {
    setTitle("Event Object Demonstration");

    setSize(WINDOW_WIDTH, WINDOW_HEIGHT);

    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    messageLabel = new JLabel("What program language is this written in");

    anwser1 = new JButton("C++");
    anwser2 = new JButton("Java");
    anwser3 = new JButton("Unix");
    anwser4 = new JButton("Pearl");


    anwser1.addActionListener(new ButtonListener());
    anwser2.addActionListener(new ButtonListener());
    anwser3.addActionListener(new ButtonListener());
    anwser4.addActionListener(new ButtonListener());

    panel = new JPanel();
    panel.add(messageLabel);
    panel.add(anwser1);
    panel.add(anwser2);
    panel.add(anwser3);
    panel.add(anwser4);

    add(panel);

    setVisible(true);



    setTitle("Event Object Demonstration");

    setSize(WINDOW_WIDTH, WINDOW_HEIGHT);

    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    messageLabel = new JLabel("What is 2 + 3");

    anwser1 = new JButton("5");
    anwser2 = new JButton("19");
    anwser3 = new JButton("1");
    anwser4 = new JButton("6");


    anwser1.addActionListener(new ButtonListener());
    anwser2.addActionListener(new ButtonListener());
    anwser3.addActionListener(new ButtonListener());
    anwser4.addActionListener(new ButtonListener());

    panel = new JPanel();
    panel.add(messageLabel);
    panel.add(anwser1);
    panel.add(anwser2);
    panel.add(anwser3);
    panel.add(anwser4);

    add(panel);

    setVisible(true);
    }


    private class ButtonListener implements ActionListener
    {
    public void actionPerformed(ActionEvent e)
    {

    String actionCommand = e.getActionCommand();

    if (actionCommand.equals("C++"))
    {
    JOptionPane.showMessageDialog(null, "Wrong");

    }
    else if (actionCommand.equals("Java"))
    {
    JOptionPane.showMessageDialog(null, "Correct");
    c++;

    }
    else if (actionCommand.equals("Unix"))
    {
    JOptionPane.showMessageDialog(null, "Wrong");

    }
    else if (actionCommand.equals("Pearl"))
    {
    JOptionPane.showMessageDialog(null, "Wrong");
    }


    JOptionPane.showMessageDialog(null, c + "Correct out of 1" + 100 * c/1 + "%" );
    JOptionPane.showMessageDialog(null, 100 * c/1 + "%");

    }

    }

    public static void main(String[] args)
    {
    quiz2 eow = new quiz2();

    }

    }
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