MenuBar,Menu,MenuItem,CheckboxMenuItem Example

MenuBar,Menu,MenuItem,CheckboxMenuItem Example
java code

import java.awt.*;

public class MenuWindow extends Frame {
    boolean startApplet = true;
    TextArea output;

    public MenuWindow() {
        MenuBar menuBar;
        Menu menuOne, menuTwo, menuThree, menuFour, menuFour_1, menuFive;
        MenuItem menuItem_1, menuItem_2, menuItem3_1, menuItem3_2, menuItem3_3, menuItem3_4,
                 menuItem4_1_1, menuItem5_1, menuItem5_2;
        CheckboxMenuItem checkBoxMenuItem_1;

        output = new TextArea(5, 30);
        output.setEditable(false);
        setLayout(new BorderLayout()); //give max space to the output
        add("Center", output);

        //Build the menu bar.
        menuBar = new MenuBar();
        setMenuBar(menuBar);

        //Build first menu in the menu bar.
	//Specifying the second argument as true
	//makes this a tear-off menu.
        menuOne = new Menu("Menu 1", true);
        menuBar.add(menuOne);
        menuItem_1 = new MenuItem("Menu Item 1_1");
        menuOne.add(menuItem_1);
        menuItem_2 = new MenuItem("Menu Item 1_2");
        menuOne.add(menuItem_2);

        //Build help menu.
        menuFive = new Menu("Menu 5");
        menuBar.add(menuFive); //just setting the help menu doesn't work; must add it
        menuBar.setHelpMenu(menuFive);
        menuItem5_1 = new MenuItem("Menu Item 5_1");
        menuFive.add(menuItem5_1);
        menuItem5_2 = new MenuItem("Menu Item 5_2");
        menuFive.add(menuItem5_2);

        //Build second menu in the menu bar.
        menuTwo = new Menu("Menu 2");
        menuBar.add(menuTwo);
        checkBoxMenuItem_1 = new CheckboxMenuItem("Menu Item 2_1");
        menuTwo.add(checkBoxMenuItem_1);

        //Build third menu in the menu bar.
        menuThree = new Menu("Menu 3");
        menuBar.add(menuThree);
        menuItem3_1 = new MenuItem("Menu Item 3_1");
        menuThree.add(menuItem3_1);
        menuItem3_2 = new MenuItem("Menu Item 3_2");
        menuThree.add(menuItem3_2);
        menuThree.addSeparator();
        menuItem3_3 = new MenuItem("Menu Item 3_3");
        menuThree.add(menuItem3_3);
        menuItem3_4 = new MenuItem("Menu Item 3_4");
        menuItem3_4.disable();
        menuThree.add(menuItem3_4);

        //Build fourth menu in the menu bar.
        menuFour = new Menu("Menu 4");
        menuBar.add(menuFour);
        menuFour_1 = new Menu("Submenu 4_1");
        menuFour.add(menuFour_1);
        menuItem4_1_1 = new MenuItem("Menu Item 4_1_1");
        menuFour_1.add(menuItem4_1_1);
    }

    public boolean handleEvent(Event event) {
        if (event.id == Event.WINDOW_DESTROY) {
            if (startApplet) {
                dispose();
            } else {
                System.exit(0);
            }
        }   
        return super.handleEvent(event);
    }

    public boolean action(Event event, Object arg) {
        String str = "Action detected";

        if (event.target instanceof MenuItem) {
            MenuItem mi=(MenuItem)(event.target);
            str += " on " + arg;
            if (mi instanceof CheckboxMenuItem) {
                str += " (state is " 
                           + ((CheckboxMenuItem)mi).getState()
                       + ")";
            }
            MenuContainer parent = mi.getParent();
            if (parent instanceof Menu) {
                str += " in " + ((Menu)parent).getLabel();
            } else {
                str += " in a container that isn't a Menu";
            }
        }
        str += ".\n";
        output.appendText(str);
        return true;
    }

    public static void main(String[] args) {
        MenuWindow window = new MenuWindow();
        window.startApplet = false;

        window.setTitle("MenuWindow Application");
	window.pack();
        window.show();
    }
}