JMenu for changing LaF of a Swing app

LafMenu.java

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.HashMap;

import javax.swing.ButtonGroup;
import javax.swing.JMenu;
import javax.swing.JRadioButtonMenuItem;
import javax.swing.SwingUtilities;
import javax.swing.UIManager;
import javax.swing.UIManager.LookAndFeelInfo;
import javax.swing.UnsupportedLookAndFeelException;

public class LafMenu extends JMenu implements ActionListener{
	private static final long serialVersionUID = -8535372481219721273L;
	private HashMap<String,String> lafmap = new HashMap<String,String>(); 
	private ButtonGroup bgroup;
	public LafMenu(String title) {
		super(title);
		addItems();
	}
	private void addItems() {
		bgroup = new ButtonGroup();
		LookAndFeelInfo[] installedLookAndFeels = UIManager.getInstalledLookAndFeels();
		for (int i = 0; i < installedLookAndFeels.length; i++) {
			JRadioButtonMenuItem jRadioButtonMenuItem =
					new JRadioButtonMenuItem(installedLookAndFeels[i].getName());	
			lafmap.put(installedLookAndFeels[i].getName(), 
			installedLookAndFeels[i].getClassName());
			this.add(jRadioButtonMenuItem);
			bgroup.add(jRadioButtonMenuItem);
			jRadioButtonMenuItem.addActionListener(this);
		}
	}
	@Override
	public void actionPerformed(ActionEvent e) {
		String lafname = ((JRadioButtonMenuItem)e.getSource()).getText();
		try {
			UIManager.setLookAndFeel(lafmap.get(lafname));
			SwingUtilities.updateComponentTreeUI(SwingUtilities.getRoot(this));
		} catch (ClassNotFoundException | 
			InstantiationException  | 
			IllegalAccessException  | 
			UnsupportedLookAndFeelException e1) {
			e1.printStackTrace();
		} 
	}
}