Create menus and submenus in Java

In this section, you will learn about creation of
menus, submenus and Separators in Java Swing. Menu bar contains a
collection of menus. Each menu can have multiple menu
items these are called submenu. Similarly, all
menus have multiples menu items. The Separator divides the menu items in a
separate groups like same types of menu Items are divided into a individual parts.
For pictorial representation, the image for the result of the given program is
given below:


This program shows how to create menu bar, menus, submenus and
Separators. Here, all items shows on a frame with the help of following methods
and APIs:
JMenuBar:
This is the class which constructs a menu bar
that contains several menus.
JMenu(String):
This is the constructor of JMenu class.
This constructor constructs the new menu. It takes the string type value which
is the name label for the menu.
JMenuItem(String):
This is the constructor of JMenuItem
class which constructs new menu items for the specific menu. It takes string types value
which is the label for the menu item.
JSeparator():
This is the constructor of JSeparator class
which adds an extra line between menu items. This line, only separates the menu
items.
setJMenuBar():
This method is used to set the menu bar to the
specified frame. It takes the object of the JMenuBar class.
Here is the code of program:
import javax.swing.*;
public class SwingMenu{
public static void main(String[] args) {
SwingMenu s = new SwingMenu();
}
public SwingMenu(){
JFrame frame = new JFrame("Creating a JMenuBar, JMenu, JMenuItem and
seprator Component");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JMenuBar menubar = new JMenuBar();
JMenu filemenu = new JMenu("File");
filemenu.add(new JSeparator());
JMenu editmenu = new JMenu("Edit");
editmenu.add(new JSeparator());
JMenuItem fileItem1 = new JMenuItem("New");
JMenuItem fileItem2 = new JMenuItem("Open");
JMenuItem fileItem3 = new JMenuItem("Close");
fileItem3.add(new JSeparator());
JMenuItem fileItem4 = new JMenuItem("Save");
JMenuItem editItem1 = new JMenuItem("Cut");
JMenuItem editItem2 = new JMenuItem("Copy");
editItem2.add(new JSeparator());
JMenuItem editItem3 = new JMenuItem("Paste");
JMenuItem editItem4 = new JMenuItem("Insert");
filemenu.add(fileItem1);
filemenu.add(fileItem2);
filemenu.add(fileItem3);
filemenu.add(fileItem4);
editmenu.add(editItem1);
editmenu.add(editItem2);
editmenu.add(editItem3);
editmenu.add(editItem4);
menubar.add(filemenu);
menubar.add(editmenu);
frame.setJMenuBar(menubar);
frame.setSize(400,400);
frame.setVisible(true);
}
}
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