File Upload Problem

Hi,

I have a form

<FORM name=formName ACTION=""  onsubmit='return fun();'
target="javascript:new window('toolbar=no, location=no,
directories=no,scrollbars=no, status=yes, width=100, height=100');"
METHOD=POST>

<INPUT NAME="file" TYPE="file" onkeypress="return false;">
<input ...................
<input type="submit" name="Send">

</FORM>

When I am trying to upload a file(by setting the form's file Paramater and
then submitting the form) using HTTPUNIT

formName.setParameter("file",new File("D/example.java"));
request = formName.getRequest("Send");
response = wc.getResponse( request );

an error is displayed saying "java.lang.RuntimeException: May not URL-encode
a file upload request"

Please help me why am I getting this error and what should I modify in the
HTTPUNIT Code to avoid this error.

Thanks,
Kaleem

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