Look and Feel

import java.awt.EventQueue;
import java.awt.event.*;
import javax.swing.*;

/**
 * @version 1.32 2007-06-12
 * @author Cay Horstmann
 */
public class PlafTest
{
   public static void main(String[] args)
   {
      EventQueue.invokeLater(new Runnable()
         {
            public void run()
            {
               PlafFrame frame = new PlafFrame();
               frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
               frame.setVisible(true);
            }
         });
   }
}

/**
 * A frame with a button panel for changing look and feel
 */
class PlafFrame extends JFrame
{
   public PlafFrame()
   {
      setTitle("PlafTest");
      setSize(DEFAULT_WIDTH, DEFAULT_HEIGHT);

      buttonPanel = new JPanel();
      
      UIManager.LookAndFeelInfo[] infos = UIManager.getInstalledLookAndFeels();
      for (UIManager.LookAndFeelInfo info : infos)
         makeButton(info.getName(), info.getClassName());
      
      add(buttonPanel);
   }

   /**
    * Makes a button to change the pluggable look and feel.
    * @param name the button name
    * @param plafName the name of the look and feel class
    */
   void makeButton(String name, final String plafName)
   {
      // add button to panel

      JButton button = new JButton(name);
      buttonPanel.add(button);

      // set button action

      button.addActionListener(new ActionListener()
         {
            public void actionPerformed(ActionEvent event)
            {
               // button action: switch to the new look and feel
               try
               {
                  UIManager.setLookAndFeel(plafName);
                  SwingUtilities.updateComponentTreeUI(PlafFrame.this);
               }
               catch (Exception e)
               {
                  e.printStackTrace();
               }
            }
         });
   }

   private JPanel buttonPanel;
   
   public static final int DEFAULT_WIDTH = 300;
   public static final int DEFAULT_HEIGHT = 200;
}

Results