2.3 Create an application that displays a frame with a menu bar. When a user selects any menu or menu item, display that selection on a text area in the center of the frame

Prac9Menu.java
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
public class Prac9Menu extends JFrame implements ActionListener
{
    private JMenuItem newOne;
    private JMenuItem save;
    private JMenuItem SaveAs;
    private JMenuItem exit;
    private JTextArea l;

    Prac9Menu()
    {
        setLayout(new FlowLayout());
        JMenuBar menubar=new JMenuBar();

        JMenu menu=new JMenu("File");
        

        l=new JTextArea(1,5);
         
        JPanel p=new JPanel();
        add(p);
     
        l.setLayout(new FlowLayout());
        p.add(l);

        newOne=new JMenuItem("new");
        save=new JMenuItem("save");
        SaveAs=new JMenuItem("SaveAs");
        exit=new JMenuItem("Exit");

        menubar.add(menu);
        menu.add(newOne);
        menu.add(save);
        menu.add(SaveAs);
        menu.add(exit);

        newOne.addActionListener(this);
        save.addActionListener(this);
        SaveAs.addActionListener(this);
        exit.addActionListener(this);

        setDefaultCloseOperation(EXIT_ON_CLOSE);
        setJMenuBar(menubar);

        setSize(600,400);
        setVisible(true);

    }

    public void actionPerformed(ActionEvent ae)
    {
        if(ae.getSource()==newOne)
        {
            l.setText("new");
        }
         else if(ae.getSource()== save)
        {
            l.setText("save");
        }
        else if(ae.getSource()== SaveAs)
        {
            l.setText("saveAS");
        }
        else if(ae.getSource()== exit)
        {
            l.setText("exit");
        }
    }

    public static void main(String arg[])
    {
        new Prac9Menu();
    }
}

Output

Try code to see proper output

Happy Coding :)