import java.awt.*;import java.beans.*;import java.awt.event.*;import javax.swing.*;import javax.swing.event.*;/**  * This class listens for UISwitches, and updates a given component.  *  * @version 1.4 04/23/99  * @author Steve Wilson  */public class UISwitchListener implements PropertyChangeListener {    JComponent componentToSwitch;    public UISwitchListener(JComponent c) {        componentToSwitch = c;    }    public void propertyChange(PropertyChangeEvent e) {        String name = e.getPropertyName();	if (name.equals("lookAndFeel")) {	    SwingUtilities.updateComponentTreeUI(componentToSwitch);	    componentToSwitch.invalidate();	    componentToSwitch.validate();	    componentToSwitch.repaint();	}    }}