Getting Correct and Incorrect to show on my GUI

Question

What am i missing to allow correct and incorrect to show on my GUI.
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;
    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(42); //step 4
        Listener listen = new Listener();
        choice.addActionListener(listen);
        add(choice);
        add(label);
        add(text);
    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 (input.equals(Answer1))testresult = new JLabel("Correct!"); //Having difficulty getting the correct and the incorrect to show as a label
                 else testresult = new JLabel("Incorrect!");
                 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;
    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();

Answer 1

Basically adding in the code tjacobs01 demo'd for you and a little extra.
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class AnAQuiz extends JPanel {
    private int chosen;
    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(42); //step 4
        Listener listen = new Listener();
        choice.addActionListener(listen);
        setLayout(new BoxLayout(this, 0));
        add(choice);
        add(label);
        add(text);
          text.addKeyListener(new KeyAdapter() {
          public void keyPressed(KeyEvent ke) {
            if (ke.getKeyCode() == KeyEvent.VK_ENTER) {
              input = text.getText();
              if ( chosen == 0  &&  input.equals(Answer1) )
                label.setText("Correct");
              else if ( chosen == 1  &&  input.equals(Answer2) )
                label.setText("Correct");
              else if ( chosen == 2  &&  input.equals(Answer3) )
                label.setText("Correct");
              else
                label.setText("Incorrect");
        add(testresult);
        testresult.setVisible(false);
    private class Listener implements ActionListener {
        public void actionPerformed(ActionEvent event ) {
        chosen = choice.getSelectedIndex();
        testresult.setVisible(true);
            switch (chosen) {
            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;
             default:
                break;
            text.requestFocus();
    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.setVisible(true);
}