Como farzer um JMenu Lateral

JFrame f = new JFrame("Janela");
		f.setSize(800,600);
		
		JMenuBar b = new JMenuBar();
		JMenu m = new JMenu("Arquivos");
		JMenuItem i = new JMenuItem("Abrir...");
		b.add(m);
		m.add(i);
		f.getContentPane().add(b, BorderLayout.WEST);
		f.setVisible(true);

import java.awt.BorderLayout;
 import java.awt.GridLayout;
 import java.awt.event.KeyEvent;
 
 import javax.swing.JDesktopPane;
 import javax.swing.JFrame;
 import javax.swing.JMenu;
 import javax.swing.JMenuBar;
 import javax.swing.JMenuItem;
 
 
 public class Menu extends JFrame {
 	
 	
 	
 	public JMenuBar Menus(){
 		
 	    JMenuBar barra = new JMenuBar();
 		JMenu arquivo = new JMenu("Arquivo");
 		arquivo.setMnemonic(KeyEvent.VK_A);
 		JMenu ajuda = new JMenu("Ajuda");
 		ajuda.setMnemonic(KeyEvent.VK_J);
 		JMenuItem novo = new JMenuItem("Novo");
 		novo.setMnemonic(KeyEvent.VK_N);
 		JMenuItem abrir = new JMenuItem("Abrir");
 		abrir.setMnemonic(KeyEvent.VK_B);
 		JMenuItem sair = new JMenuItem ("Sair");
 		sair.setMnemonic(KeyEvent.VK_S);
 		arquivo.add(novo);
 		arquivo.add(abrir);
 		arquivo.add(sair);
 		barra.add(arquivo);
 		barra.add(ajuda);
 	
 	return barra;
 	}
 	
 	public void Desktop(){		
 		    
 		    
 		    JDesktopPane desktop = new JDesktopPane();
 		    getContentPane().add(Menus(),BorderLayout.WEST);
 		    //setJMenuBar(Menus());
 		

// com getcontentpane

    
 		    getContentPane().add(desktop,BorderLayout.SOUTH);


 		    desktop.setLayout(new GridLayout(1,2));
 		    setDefaultCloseOperation(EXIT_ON_CLOSE);
 			
 		    setSize(540,540);//lagura ,altura
 			setVisible(true);
 					
 			
 		}
 	
 	
 	
 	public static void main(String[] args) {
 		Menu m = new Menu();
 		m.Desktop();
 	}
 }