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 | package headfirst.proxy.virtualproxy;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.Enumeration;
import java.util.Hashtable;
import javax.swing.Icon;
import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
public class ImageProxyTestDrive {
  ImageComponent imageComponent;
  JFrame frame = new JFrame("CD Cover Viewer");
  JMenuBar menuBar;
  JMenu menu;
  Hashtable<String,String> cds = new Hashtable<String,String>();
  public static void main (String[] args) throws Exception {
    ImageProxyTestDrive testDrive = new ImageProxyTestDrive();
  }
  public ImageProxyTestDrive() throws Exception{
    cds.put("Ambient: Music for Airports","http://images.amazon.com/images/P/B000003S2K.01.LZZZZZZZ.jpg");
    cds.put("Buddha Bar","http://images.amazon.com/images/P/B00009XBYK.01.LZZZZZZZ.jpg");
    cds.put("Ima","http://images.amazon.com/images/P/B000005IRM.01.LZZZZZZZ.jpg");
    cds.put("Karma","http://images.amazon.com/images/P/B000005DCB.01.LZZZZZZZ.gif");
    cds.put("MCMXC A.D.","http://images.amazon.com/images/P/B000002URV.01.LZZZZZZZ.jpg");
    cds.put("Northern Exposure","http://images.amazon.com/images/P/B000003SFN.01.LZZZZZZZ.jpg");
    cds.put("Selected Ambient Works, Vol. 2","http://images.amazon.com/images/P/B000002MNZ.01.LZZZZZZZ.jpg");
    URL initialURL = new URL(cds.get("Selected Ambient Works, Vol. 2"));
    menuBar = new JMenuBar();
    menu = new JMenu("Favorite CDs");
    menuBar.add(menu);
    frame.setJMenuBar(menuBar);
    for(Enumeration<String> e = cds.keys(); e.hasMoreElements();) {
      String name = e.nextElement();
      JMenuItem menuItem = new JMenuItem(name);
      menu.add(menuItem);
      menuItem.addActionListener(event -> {
        imageComponent.setIcon(new ImageProxy(getCDUrl(event.getActionCommand())));
        frame.repaint();
      });
    }
    // set up frame and menus
    Icon icon = new ImageProxy(initialURL);
    imageComponent = new ImageComponent(icon);
    frame.getContentPane().add(imageComponent);
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.setSize(800,600);
    frame.setVisible(true);
  }
  URL getCDUrl(String name) {
    try {
      return new URL(cds.get(name));
    } catch (MalformedURLException e) {
      e.printStackTrace();
      return null;
    }
  }
}
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