Java SE (Java Platform, Standard Edition)

I have written a java servlet that runs through Apache Tomcat. The problem I am having is that when I run in on my Mac OS or Windows boxes fonts render properly (I am creating a PNG image with the servlet). When I move my code to my production box (Ubuntu SE) it recognizes only a handful of the installed fonts.

I am new to Java so I have no idea why this is happening. I am using the following code to output my fonts:

response.setContentType("text/html");
PrintWriter out = response.getWriter();
for (String fontName : GraphicsEnvironment.getLocalGraphicsEnvironment().getAvailableFontFamilyNames())
{
	out.println(fontName);
}
return;

I am almost positive this is a Java issue... (but almost isn't 100%)

Thanks for any help. I hope its a simple issue of having the fonts in the proper directory or something.

Thanks.

ebn