Getting Text to show on GUI

Question

I'm about desperate because i spent 3 days on this and i'm am in dire need for help!
1. First i want to create a GUI that it a quiz.
2. Create Questions by using Combo Box
3. Next it creates a text field and allow me to input my answer
4. following that, after the input is inputted, i click a button that says check answer and it will return if it is correct or false.
The problem is that code is so messed up that i don't know where to go.
When i run it, it show me a combo box with 3 questions but before i even answer it, it shows that i'm incorrect.
Thats why I can't really brief wat i need help in. So, could you write a quick code that can summarize the whole thing. You can use my code and fix it up. Thanks very so much!
package anaquiz;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class AnAQuiz extends JPanel {
    private JComboBox choice;
    private JLabel label;
    private JTextField text;
    Button CheckAnswer;
    Button TryAgain;
    private String Answer1 = "Wilson";
    private String Answer2 = "Ace";
    private String Answer3 = "Yes";
    private String input = " ";
    boolean Answer = false;
    JLabel testresult = new JLabel("");
public AnAQuiz() {
        choice = new JComboBox();
        label = new JLabel();
        label.setBackground(Color.blue);
        choice.addItem("Tennis Question #1");
        choice.addItem("Tennis Question #2");
        choice.addItem("Tennis Question #3");
        text = new JTextField(20); //step 4
        Listener listen = new Listener();
        choice.addActionListener(listen);
        setLayout(new BoxLayout(this, 0));
        add(choice);
        add(label);
        add(text);
        add(testresult);
private class Listener implements ActionListener {
public void actionPerformed(ActionEvent event ) {
   int c = choice.getSelectedIndex();
     switch (c) {
             case 0:
                label.setText("Whats the famous tennis brand that begins with 'W'?");
                if (Answer1.equals(input))testresult.setText("Correct");
              else { testresult.setText("Incorrect");
                 break;
             case 1:
                label.setText("What do you call when someone misses a serve?");
                if (Answer2.equals(input))testresult.setText("Correct");
               else { testresult.setText("Incorrect");
                break;
             case 2:
                label.setText("Should you shake hands after a match?");
                if (input.equals(Answer3))testresult.setText("Correct");
                 else{
                     testresult.setText("Incorrect");
                break;
      testresult.setVisible(false);
public static void main(String[] args)    {
        JFrame frame = new JFrame("Quiz");
        frame.getContentPane().add(new AnAQuiz());
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.pack();
      //  frame.show();
        frame.setVisible(true);
}

Answer 1

package anaquiz;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class AnAQuiz extends JPanel {
    private JComboBox choice;
    private JLabel label;
    private JTextField text;
    Button CheckAnswer;
    Button TryAgain;
    private String Answer1 = "Wilson";
    private String Answer2 = "Ace";
    private String Answer3 = "Yes";
    private String input = " ";
    boolean Answer = false;
    JLabel testresult = new JLabel("");
    public AnAQuiz() {
        choice = new JComboBox();
        label = new JLabel();
        label.setBackground(Color.blue);
        choice.addItem("Tennis Question #1");
        choice.addItem("Tennis Question #2");
        choice.addItem("Tennis Question #3");
        text = new JTextField(20); //step 4
        ButtonListener listen = new ButtonListener();
        CheckBoxListener listen1 = new CheckBoxListener();
        choice.addActionListener(listen);
        choice.addActionListener(listen1);
        setLayout(new BoxLayout(this, 0));
        add(choice);
        add(label);
        add(text);
        testresult.setVisible(false);
        add(testresult);
    private class  CheckBoxListener implements ActionListener {
        public void actionPerformed(ActionEvent event) {
            int c = choice.getSelectedIndex();
            switch (c) {
            case 0:
                label.setText(
                        "Whats the famous tennis brand that begins with 'W'?");
                break;
            case 1:
                label.setText("What do you call when someone misses a serve?");
                break;
            case 2:
                label.setText("Should you shake hands after a match?");
                break;
        private class  ButtonListener implements ActionListener {
            public void actionPerformed(ActionEvent event) {
                int c = choice.getSelectedIndex();
                if (Answer1.equals(input)) testresult.setText("Correct");
                else
                    testresult.setText("Incorrect");
                if (Answer2.equals(input)) testresult.setText("Correct");
                else
                    testresult.setText("Incorrect");
                if (input.equals(Answer3)) testresult.setText("Correct");
                else
                    testresult.setText("Incorrect");
        public static void main(String[] args) {
            JFrame frame = new JFrame("Quiz");
            frame.getContentPane().add(new AnAQuiz());
            frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
            frame.pack();
            //  frame.show();
            frame.setVisible(true);
}now it has no errors but correct and incorrect doesn't show after i type in the answer in the textfield after hitting the enter button