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The universal decorator for Swing components.
There is a newer version: 3.0.4
/**
 * Copyright (c) 2006-2008, Alexander Potochkin
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *   * Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *   * Redistributions in binary form must reproduce the above
 *     copyright notice, this list of conditions and the following
 *     disclaimer in the documentation and/or other materials provided
 *     with the distribution.
 *   * Neither the name of the JXLayer project nor the names of its
 *     contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

package org.jdesktop.jxlayer.demo.util;

import javax.swing.*;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;

public class LafMenu extends JMenu {

    public LafMenu() {
        this("LookAndFeel");
    }

    public LafMenu(String s) {
        super(s);
        UIManager.LookAndFeelInfo[] lafs =
                UIManager.getInstalledLookAndFeels();
        for (final UIManager.LookAndFeelInfo laf : lafs) {
            JMenuItem item = new JMenuItem(laf.getName());
            item.addActionListener(new ActionListener() {
                public void actionPerformed(ActionEvent e) {
                    try {
                        UIManager.setLookAndFeel(laf.getClassName());
                        SwingUtilities.updateComponentTreeUI(getTopLevelAncestor());
                    } catch (Exception ex) {
                        ex.printStackTrace();
                    }
                }
            });
            add(item);
        }
    }

    public static JMenuBar createMenuBar() {
        JMenuBar bar = new JMenuBar();
        bar.add(new LafMenu());
        return bar;
    }
}