JMenuItem justification

Question

how can I change JMenuItem justification from right to left, because if I create JMenu with glue then JMenuItem sticking out of the JFrame
import javax.swing.Box;
import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
public class MenuGlueDemo {
    public JMenuBar createMenuBar() {
        JMenuBar menuBar = new JMenuBar();
        menuBar.add(createMenu("Menu 1"));
        menuBar.add(createMenu("Menu 2"));
        menuBar.add(Box.createHorizontalGlue());
        menuBar.add(createMenu("Menu 3"));
        return menuBar;
    public JMenu createMenu(String title) {
        JMenu m = new JMenu(title);
        m.add("Menu item #1 in " + title);
        m.add("Menu item #2 in " + title);
        m.add("Menu item #3 in " + title);
        return m;
    private static void createAndShowGUI() {
        JFrame frame = new JFrame("MenuGlueDemo");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        MenuGlueDemo demo = new MenuGlueDemo();
        frame.setContentPane(demo.createMenuBar());
        frame.setSize(300, 100);
        frame.setVisible(true);
    public static void main(String[] args) {
        javax.swing.SwingUtilities.invokeLater(new Runnable() {
            @Override
            public void run() {
                createAndShowGUI();
}

Answer 1

How about using the setComponentOrientation(ComponentOrientation.RIGHT_TO_LEFT) method.
import java.awt.*;
import javax.swing.*;
public class MenuGlueDemo2 {
  public JMenuBar createMenuBar() {
    JMenuBar menuBar = new JMenuBar();
    menuBar.add(createMenu("Menu 1"));
    menuBar.add(createMenu("Menu 2"));
    menuBar.add(Box.createHorizontalGlue());
    JMenu menu = createMenu("Menu 3");
    menu.setComponentOrientation(
        ComponentOrientation.RIGHT_TO_LEFT);
    menuBar.add(menu);
    return menuBar;
  public JMenu createMenu(String title) {
    JMenu m = new JMenu(title);
    m.add("Menu item #1 in " + title);
    m.add("Menu item #2 in " + title);
    m.add("Menu item #3 in " + title);
    return m;
  private static void createAndShowGUI() {
    JFrame frame = new JFrame("MenuGlueDemo");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.setJMenuBar(new MenuGlueDemo2().createMenuBar());
    frame.setSize(300, 100);
    frame.setVisible(true);
  public static void main(String[] args) {
    javax.swing.SwingUtilities.invokeLater(new Runnable() {
      @Override public void run() { createAndShowGUI(); }
}