hello!

i'd like to batch convert rtf files to pdf files.
i have no problem with single conversions,
but my program fails with a DocumentException
"The document has been closed. You can't add any Elements"
when i put the whole conversion in a loop iterating over files.

please give me some hint!

thanks in advance,
jb.

for(all the files) {
    convert(file)
}

synchronized convert(file) {
  RtfParser = new RtfParser();
  Document document = new Document();
  PdfWriter writer = new PdfWriter.getInstance(document, outputStream);
  document.open();
  rtfParser.convertRtfDocument(inputstream, document);
  document.close();

  // not necessary
  document = null;
  RtfParser = null;
}
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