package swingExamples;

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.SwingUtilities;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;

class LookAndFeelPanel extends JPanel
{
  public LookAndFeelPanel()
  {
    UIManager.LookAndFeelInfo[] feels = 
             UIManager.getInstalledLookAndFeels();
    for (UIManager.LookAndFeelInfo feel: feels)
      makeButton( feel.getName(), feel.getClassName() );
  }
  
  private void makeButton(String feelName, 
                          final String feelClassName)
  {
    JButton button = new JButton(feelName);
    add(button);
    
    button.addActionListener( 
      new ActionListener()
      {
        public void actionPerformed(ActionEvent event)
        {
          try
          {
            UIManager.setLookAndFeel(feelClassName);
          } 
          catch (ClassNotFoundException ex)
          {
            ex.printStackTrace();
          } 
          catch (InstantiationException ex)
          {
            ex.printStackTrace();
          } 
          catch (IllegalAccessException ex)
          {
            ex.printStackTrace();
          } 
          catch (UnsupportedLookAndFeelException ex)
          {
            ex.printStackTrace();
          }
              
          SwingUtilities.updateComponentTreeUI(
                                 LookAndFeelPanel.this);
        }
      }
    );
  }
}

class LookAndFeelFrame extends JFrame
{
  public LookAndFeelFrame()
  {
    setTitle("Setting Look and Feel");
    setSize(300, 200);
    LookAndFeelPanel panel = new LookAndFeelPanel();
    getContentPane().add(panel);
  }
}

public class LookAndFeelDisplay
{
  public static void main(String[] args)
  {
    JFrame frame = new LookAndFeelFrame();
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.setVisible(true);
  }
}