Hi all,

I have problem to call the ActionListener but have no idea what is
going wrong,  Please help. Thankyou.

When compile, the error message show :
-----------------------------------------------------------
C:\>javac TestEditorFrame.java

.\EditorFrame.java:7: cannot resolve symbol
symbol  : class ActionListener
location: class EditorFrame
public class EditorFrame extends JFrame implements ActionListener{

      ^
.\EditorFrame.java:45: cannot resolve symbol
symbol  : class ActionEvent
location: class EditorFrame
       public void actionPerformed(ActionEvent ae){
                                                ^
.\EditorFrame.java:40: addActionListener(java.awt.event.ActionListener)
in javax
.swing.AbstractButton cannot be applied to (javax.swing.JMenuItem)
       itemSave.addActionListener(itemSave);
                    ^
3 errors

Class EditorFrame
---------------------------
import java.awt.*;
import javax.swing.*;

public class EditorFrame extends JFrame implements ActionListener{
    //Attribute
    private JTextArea textArea;
    private JMenuBar menubar = new JMenuBar();
    private JMenu fileMenu = new JMenu("File");
    private JMenuItem itemSave = new JMenuItem("Save");

    //constructor
    public EditorFrame(){
        Container contentPane = getContentPane();
        String content = ("This is a text.\nSecond Line.");
        textArea = new JTextArea(content, 3, 20);
        setJMenuBar(menubar);
        menubar.add(fileMenu);
        fileMenu.add(itemSave);
                               contentPane.add(textArea);
                               itemSave.addActionListener(this);
    }

    //Action Listener Method
    public void actionPerformed(ActionEvent ae){
        System.out.println("ok");
    }
}

Class TestEditorFrame
---------------------------------
import java.awt.*;
import javax.swing.*;

//Definition of class TestEditorFrame
public class TestEditorFrame extends JFrame {

    //Main executive method
    public static void main(String args[]){

        //create an EditorFrame object
        EditorFrame anEditor = new EditorFrame();

        anEditor.setVisible(true);

        //set when the close button is clicked, the application exits
        anEditor.setDefaultCloseOperation(EXIT_ON_CLOSE);
       
        //Set the GUI to its optimal size
        anEditor.pack();
       
    }
}