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

public class JToolBarApp extends JPanel
{
  private JLabel theLabel = new JLabel("", JLabel.CENTER);

  public JToolBarApp()
  {
    JToolBar tbar = new JToolBar();

    setLayout(new BorderLayout());
    add(tbar,     BorderLayout.NORTH);
    add(theLabel, BorderLayout.CENTER);

    theLabel.setFont(new Font("Serif", Font.BOLD+Font.ITALIC, 36));

    addBtn(tbar, "Car1.GIF", "Blue");
    addBtn(tbar, "Car2.GIF", "Red");
    addBtn(tbar, "Car3.GIF", "Yellow");
    addBtn(tbar, "Car4.GIF", "Green");
  }

  public void addBtn(JToolBar tbar, String file, String color)
  {
    ImageIcon icon = new ImageIcon(file);
    JButton   btn  = new JButton(icon);
    btn.setToolTipText(color);

    final String op = "Start the " + color + " car.";

    btn.addActionListener(new ActionListener()
    {
      public void actionPerformed(ActionEvent evt)
      {
        theLabel.setText(op);
      }
    });
    tbar.add(btn);
  }

  public static void main(String[] args)
  {
    JToolBarApp ja = new JToolBarApp();
    GApp app = new GApp("The JToolBar Application", ja);
    app.setSize(450, 250);
    app.show();
  }
}