Frame.

In Core Java, the Frame and Applet containers can have a MenuBar. The MenuBar class is part of the AWT (Abstract Window Toolkit) library in Java, and it is used to create menus in GUI applications. The Frame class represents a top-level window with a title and border, and the Applet class represents an applet, which is a small Java program that runs within a web browser.

To add a MenuBar to a Frame or Applet, you typically create an instance of MenuBar, add one or more Menu objects to it, and then set the MenuBar as the menu bar for the Frame or Applet. Here’s a simple example:

java

import java.awt.*;
public class MenuBarExample extends Frame {

    public MenuBarExample() {

        // Create a MenuBar

        MenuBar menuBar = new MenuBar();
        // Create a Menu

        Menu fileMenu = new Menu("File");
        // Create MenuItems and add them to the Menu

        MenuItem newItem = new MenuItem("New");

        MenuItem openItem = new MenuItem("Open");

        MenuItem exitItem = new MenuItem("Exit");
        fileMenu.add(newItem);

        fileMenu.add(openItem);

        fileMenu.addSeparator(); // Separator between items

        fileMenu.add(exitItem);
        // Add the Menu to the MenuBar

        menuBar.add(fileMenu);
        // Set the MenuBar for the Frame

        setMenuBar(menuBar);
        // Set other frame properties (size, visibility, etc.)

        setSize(300, 200);

        setVisible(true);

    }

public static void main(String[] args) { new MenuBarExample(); } }

In this example, a Frame is created, a MenuBar is added to it, and a “File” menu with three items is added to the MenuBar. The MenuBar is then set as the menu bar for the Frame.