Edit C:\Program Files\Java\jdk1.8.0_121\com\sun\glass\ui\swt\SWTMenuBarDelegate.java

/*
 * Copyright (c) 2012, 2014, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 *
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 */
package com.sun.glass.ui.swt;

import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Menu;

import com.sun.glass.ui.delegate.MenuBarDelegate;
import com.sun.glass.ui.delegate.MenuDelegate;

final class SWTMenuBarDelegate implements MenuBarDelegate {
    Menu menuBar;

public boolean createMenuBar() {
        return (menuBar = Display.getDefault().getMenuBar()) != null;
    }

//TODO - work around for possible bug in Quantum?
    //TODO = add 0, 1, 2, 3 => remove 3, 2, 1, leaving 0
    //TODO - for that point on, indexing starts from one
    boolean firstRemove = true;

public boolean insert(MenuDelegate menu, int pos) {
        //System.out.println("INSERT: " + pos);
        if (!firstRemove) --pos;
        if (menuBar == null) return false;
        ((SWTMenuDelegate)menu).item = new org.eclipse.swt.widgets.MenuItem(menuBar, SWT.CASCADE, pos);
        ((SWTMenuDelegate)menu).setTitle(((SWTMenuDelegate)menu).title);
        ((SWTMenuDelegate)menu).setEnabled(((SWTMenuDelegate)menu).enabled);
        ((SWTMenuDelegate)menu).item.setMenu(((SWTMenuDelegate)menu).menu);
        return true;
    }

public boolean remove(MenuDelegate menu, int pos) {
        //System.out.println("REMOVE: " + pos);
        if (!firstRemove) --pos;
        if (0 <= pos && pos < menuBar.getItemCount()) {
            menuBar.getItem(pos).dispose();
        }
        if (firstRemove && pos == 1) {
            --pos;
            firstRemove = false;
            //System.out.println("REMOVE (work around): " + pos);
            menuBar.getItem(pos).dispose();
        }
        return true;
    }

public long getNativeMenu() {
        //TODO - return menu bar handle from the operating system
        return 1L;
    }
}

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