Enable Disable Menu Item

import javax.swing.*;
import java.awt.event.*;

import javax.swing.*;

 class EnableDisableMenuExample extends JFrame {
    private JMenuBar menuBar;
    private JMenu fileMenu;

    public EnableDisableMenuExample() {
        setTitle("Enable and Disable Menu Example");
        setSize(300, 200);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        menuBar = new JMenuBar();
        setJMenuBar(menuBar);

        fileMenu = new JMenu("File");
        menuBar.add(fileMenu);

        JMenuItem openMenuItem = new JMenuItem("Open");
        fileMenu.add(openMenuItem);

        JMenuItem saveMenuItem = new JMenuItem("Save");
        fileMenu.add(saveMenuItem);

        JMenuItem closeMenuItem = new JMenuItem("Close");
        closeMenuItem.setEnabled(false);
        fileMenu.add(closeMenuItem);

        openMenuItem.addActionListener(e -> {
            // Perform some action
            closeMenuItem.setEnabled(true);
        });

        saveMenuItem.addActionListener(e -> {
            // Perform some action
            closeMenuItem.setEnabled(true);
        });

        closeMenuItem.addActionListener(e -> {
            // Perform some action
            closeMenuItem.setEnabled(false);
        });
    }


}
public class GUI{
    public static void main(String[] args) {
        EnableDisableMenuExample example = new EnableDisableMenuExample();
        example.setVisible(true);
    }
}