Hello,

Thank you for reminding me of using  PdfGraphics2D to solve my save pdf file 
problme. Actually I am new to iText and I search some info of  PdfGraphics2D. 
Here are my solutions:

 public void setTexttoPdf(String filePath,JTextPane ta) throws IOException, 
DocumentException{
         Document pdfDoc = new Document();  
         FileOutputStream pdfFile = new FileOutputStream(new File(filePath));  
  
         PdfWriter writer=PdfWriter.getInstance(pdfDoc, pdfFile);
         writer.setStrictImageSequence(true); 
         pdfDoc.open();
        
         PdfContentByte cb = writer.getDirectContent();
         cb.saveState();
         DefaultFontMapper mapper = new DefaultFontMapper();
         PdfGraphics2D g2 = (PdfGraphics2D)cb.createGraphics(612, 792, mapper);
          
          ta.paint(g2);
          ta.print(g2);
          cb.restoreState();
          pdfDoc.close();
    }


Then I insert a picture(jpg) in my Jtextpane and tried to save it as a pdf 
file, but what I got is an empty pdf file.  What's wrong with my code???


Thanks a lot  for your favor~!

Yours Chen
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