Accessing methods in Java classes from CFOBJECTS

[baden]

I need to be able to access Java methods within a class from a CFOBJECT type="JAVA"

I've got my class written and compiled:

public class HelloWorld
{
public String writeData()
{
String s1="Data that is being written.";
System.out.println(s1);
return s1;
}

}

================

CF Code:
<!--- Testing Java Objects --->

<CFOBJECT
ACTION=&quot;CREATE&quot;
TYPE=&quot;JAVA&quot;
CLASS=&quot;HelloWorld&quot;
NAME=&quot;wlEnv&quot;>

<CFSET ctx = wlEnv.writeData()>

<CFOUTPUT>
Testing Java classes with ColdFusion
</cfoutput>

================

WRITEDATA is not a public field or method on this object. Please verify that this class supports this field or method.
The error occurred while processing an element with a general identifier of (CFSET), occupying document position (9:1) to (9:31)....blah blah blah

So... going back to my server-side programming stuff... do I have to create a ServletContext or something like that and call it... something like getServletContext() then refer to methods through that object?

I've tried this:
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;

public class CFTest extends HttpServlet
{

String mimeType=&quot;text/html&quot;;

public void doGet (HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
{
doPost(request, response);
}

public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
{
response.setContentType(mimeType);
PrintWriter out = response.getWriter();
ServletContext sc = getServletContext(); //haven't actually done anything with sc

.
.
.
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Still can't get it to work!