Vertical menu bar : JMenuBar « Swing « Java Tutorial

1. Java Tutorial
2. Swing
3. JMenuBar

If you want a vertical menu bar, simply change the LayoutManager of the menu bar component.

import java.awt.GridLayout;
import java.awt.LayoutManager;
import java.awt.event.KeyEvent;

import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;

class VerticalMenuBar extends JMenuBar {
  private static final LayoutManager grid = new GridLayout(0,1);
  public VerticalMenuBar() {
    setLayout(grid);
  }
}


public class VerticalMenuBarDemo {

  public static void main(final String args[]) {
    JFrame frame = new JFrame("MenuSample Example");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    JMenuBar menuBar = new VerticalMenuBar();

    // File Menu, F - Mnemonic
    JMenu fileMenu = new JMenu("File");
    fileMenu.setMnemonic(KeyEvent.VK_F);
    menuBar.add(fileMenu);

    JMenu editMenu = new JMenu("Edit");
    menuBar.add(editMenu);
    
    frame.setJMenuBar(menuBar);
    frame.setSize(350, 250);
    frame.setVisible(true);
  }
}

14.22.JMenuBar
	14.22.1.	Creating JMenuBar Components
	14.22.2.	Adding Menus to and Removing Menus From Menu Bars
	14.22.3.	Menu Accelerator
	14.22.4.	Vertical menu bar
	14.22.5.	Shows how to right-align a menu in the menu bar, using a glue component
	14.22.6.	Customize menu layout by changing the menu bar to use a top-to-bottom box layout, and the popup menu to use a left-to-right box layout
	14.22.7.	Customizing JMenuBar Look and Feel