JComboBox addActionListener?

Question

Hi, I'm trying to write a program so that when the user makes a selection from the combobox, the selection will be inputted into a string.
However, whenever I try to run the program it gives me this error:
"Questions.java": addItemListener(java.awt.event.ItemListener) in javax.swing.JComboBox cannot be applied to (Questions) at line 120, column 15
This is the part of my code which I think is relevent:
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import java.io.*;
public class Questions extends JFrame {
  private Container container;
  private GridBagLayout gbLayout;
  private GridBagConstraints gbConstraints;
  private ButtonGroup radioGroup;
  JLabel correctL, incorrectL, correctNumL, incorrectNumL,
      youSelectL, correctSelectL;
  JButton nextB, exitB, guessB;
  JCheckBox aCB, bCB, cCB, dCB;
  JTextArea questionTA;
  JComboBox selection = new JComboBox();
  public static int qNum[] = new int[20];
  public static String question[] = new String[20];
  public static String choiceA[] = new String[20];
  public static String choiceB[] = new String[20];
  public static String choiceC[] = new String[20];
  public static String choiceD[] = new String[20];
  public static String answer[] = new String[20];
  public static int recordNum = (int) (Math.random() * 20);
  public static int total = 0;
  public static int right = 0;
  public static int wrong = 0;
  public static String whichQselected;
  public static boolean qAnswered = false;
  nextButtonHandler nextHandler;
  guessButtonHandler guessHandler;
  exitButtonHandler exitHandler;
  public Questions() {
    super("Questions");
    setContentPane(new ContentPanel("bg.gif"));
    setDefaultCloseOperation(EXIT_ON_CLOSE);
    container = getContentPane();
    gbLayout = new GridBagLayout();
    container.setLayout(gbLayout);
    gbConstraints = new GridBagConstraints();
    questionTA = new JTextArea(question[recordNum], 3, 23);
    questionTA.setForeground(Color.blue);
    questionTA.setFont(new Font("Impact", Font.PLAIN, 15));
    questionTA.setWrapStyleWord(true);
    questionTA.setLineWrap(true);
    questionTA.setEditable(false);
    correctL = new JLabel("Correct Answers: ");
    correctL.setForeground(Color.magenta);
    correctL.setFont(new Font("Ariel", Font.PLAIN, 10));
    correctNumL = new JLabel("0/0");
    correctNumL.setForeground(Color.magenta);
    correctNumL.setFont(new Font("Ariel", Font.PLAIN, 10));
    incorrectL = new JLabel("Incorrect Answers: ");
    incorrectL.setForeground(Color.red);
    incorrectL.setFont(new Font("Ariel", Font.PLAIN, 10));
    incorrectNumL = new JLabel("0/0");
    incorrectNumL.setForeground(Color.red);
    incorrectNumL.setFont(new Font("Ariel", Font.PLAIN, 10));
    youSelectL = new JLabel("You've selected:");
    youSelectL.setForeground(Color.orange);
    youSelectL.setFont(new Font("Ariel", Font.BOLD, 13));
    correctSelectL = new JLabel("The Correct answer is: ");
    correctSelectL.setForeground(Color.ORANGE);
    correctSelectL.setFont(new Font("Ariel", Font.BOLD, 13));
    nextB = new JButton("Next Question");
    nextHandler = new nextButtonHandler();
    nextB.addActionListener(nextHandler);
    nextB.setBackground(Color.WHITE);
    guessB = new JButton("Guess Picture");
    guessHandler = new guessButtonHandler();
    guessB.addActionListener(guessHandler);
    guessB.setBackground(Color.WHITE);
    exitB = new JButton("Exit");
    exitHandler = new exitButtonHandler();
    exitB.addActionListener(exitHandler);
    exitB.setBackground(Color.WHITE);
    aCB = new JCheckBox(choiceA[recordNum]);
    aCB.setBackground(Color.white);
    bCB = new JCheckBox(choiceB[recordNum]);
    bCB.setBackground(Color.white);
    cCB = new JCheckBox(choiceC[recordNum]);
    cCB.setBackground(Color.white);
    dCB = new JCheckBox(choiceD[recordNum]);
    dCB.setBackground(Color.white);
    //register events
    CheckBoxHandler handler = new CheckBoxHandler();
    aCB.addItemListener(handler);
    bCB.addItemListener(handler);
    cCB.addItemListener(handler);
    dCB.addItemListener(handler);
    //PROBLEM HERE!!!
    selection.addItemListener(this);
    selection.addItem("Geography Questions");
    selection.addItem("Math Questions");
    selection.addItem("Mixed Questions");
    selection.addItem("Music Questions");
    selection.addItem("Sports Questions");
    selection.addItem("TV Questions");
    addComponent(selection, 0, 0, 3, 1);
    addComponent(questionTA, 1, 0, 3, 1);
    addComponent(aCB, 2, 0, 1, 1);
    addComponent(bCB, 3, 0, 1, 1);
    addComponent(cCB, 4, 0, 1, 1);
    addComponent(dCB, 5, 0, 1, 1);
    addComponent(correctL, 2, 1, 1, 1);
    addComponent(correctNumL, 2, 2, 1, 1);
    addComponent(incorrectL, 2, 1, 1, 1);
    addComponent(incorrectNumL, 2, 2, 1, 1);
    addComponent(nextB, 6, 0, 1, 1);
    addComponent(guessB, 6, 1, 1, 1);
    addComponent(exitB, 6, 2, 1, 1);
    addComponent(youSelectL, 7, 0, 2, 1);
    addComponent(correctSelectL, 8, 0, 2, 1);
    gbConstraints.fill = GridBagConstraints.BOTH;
    setSize(420, 350);
    show();
//ACTION PERFORMED FOR JCOMBOBOX!!
  public void actionPerformed(ActionEvent e) {
    String whichQ[] = {"Geography", "Math",
                      "Mixed", "Music", "Sports", "TV"};
    int Selected = ((JComboBox) (e.getSource())).getSelectedIndex();
    whichQselected = whichQ[Selected];
  }Thanks in advance!

Answer 1

Also, you have added an item listener and implemented the method from the action listener. Above all, you did not declare your class as implementing the ActionListener interface.