How can i convert docx to pdf using apache poi and itext 7 with pdf calligraph on in java? - pdf

Question

i want to convert docx to pdf using apache-poi and itext 7(pdf calligraph on)
i have tried using other version of itext but they are showing problem of ligature in indic languages
import org.apache.poi.xwpf.converter.pdf.PdfConverter;
import org.apache.poi.xwpf.converter.pdf.PdfOptions;
import org.apache.poi.xwpf.usermodel.XWPFDocument;
import org.springframework.util.FileCopyUtils;
import java.io.*;
public class Docx2PdfConverterUsingPOI implements Docx2PdfConverter{
public byte[] convert(byte[] docxData) {
byte[] output = null;
try {
InputStream isFromFirstData = new ByteArrayInputStream(docxData);
XWPFDocument document = new XWPFDocument(isFromFirstData);
PdfOptions pdfOptions = PdfOptions.create();
// pdfOptions.fontEncoding(BaseFont.IDENTITY_H);
//make new file in c:\temp\
ByteArrayOutputStream out = new ByteArrayOutputStream();
//Options options =
Options.getTo(ConverterTypeTo.PDF).via(ConverterTypeVia.XWPF).
subOptions(pdfOptions);
PdfConverter.getInstance().convert(document, out, pdfOptions);
document.close();
return out.toByteArray();
} catch (IOException e) {
e.printStackTrace();
}
return output;
}
public static void main(String args[]){
Docx2PdfConverterUsingPOI docx2PdfConverterUsingPOI =new
Docx2PdfConverterUsingPOI();
String inputFile = "D:\\WORKSPACE\\yogesh\\letters\\out.docx";
FileInputStream inputStream = null;
try {
inputStream = new FileInputStream(new File(inputFile));
byte[]output =
docx2PdfConverterUsingPOI.convert(FileCopyUtils.
copyToByteArray(inputStream));
FileCopyUtils.copy(output,new
File("D:\\WORKSPACE\\yogesh\\letters\\out1.pdf"));
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
}
can anyone help me in how to use itext7 with apache poi for my docx to pdf conversion.
Also,can anyone explain how apache uses itext to get proper result of conversion(so that i can change the itext maven dependency accordingly)