Unicode

It works on my computer: Win98 with java 1.5
System.out.println("what is this: \u00e9");
what is this:

Here's a cute program that will shows ASCII to Unicode conversions.
Its from "The Java Class Libraries" by Chan and Lee

import java.awt.*;
import java.awt.event.*;
import java.awt.datatransfer.*;

public class ASCII2Unicode extends Frame implements ActionListener {

public ASCII2Unicode() {
super("Copy Unicode to clipboard");
setFont(new Font("Monospaced", Font.PLAIN, 14));

// Create the 256 buttons.
Panel p = new Panel(new GridLayout(16, 0));
for (int i=0; i<256; i++) {
Button b = new Button("" + (char)i);

// If control character, display hex value.
if (Character.isISOControl((char)i)) {
String s = "0" + Integer.toHexString(i).toUpperCase();

b.setLabel(s.substring(s.length()-2));
}

b.setName(""+(char)i);

// Listen for events.
b.addActionListener(this);

// Add to panel.
p.add(b);
} // end for(i)

addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent we) {
dispose();
System.exit(0);
}
});
// Layout and show components.
add(p, BorderLayout.CENTER);
pack();
// Center the frame
Dimension ss = Toolkit.getDefaultToolkit().getScreenSize();
setLocation((ss.width-getBounds().width)/2,
(ss.height-getBounds().height)/2);
show();
} // end

public void actionPerformed(ActionEvent evt) {
// Fetch the character.
char c = ((Component)evt.getSource()).getName().charAt(0);

// Format the unicode string for 'c'.
String result = "\\u00" + Integer.toHexString(c&0xff);

// Place result in system clipboard.
StringSelection contents = new StringSelection(result);
getToolkit().getSystemClipboard().setContents(contents, null);
}

// Start the app
public static void main(String args[]) {
new ASCII2Unicode();
}
}

So the problem is with the OS and its font tables? When presented with a character not in its set of printables it displays a ?