Add Image to a PDF using iText

I am trying to add an Image to a PDF file using iText. The files are converted from .TXT to PDF and an image is supposed to be added:

//Convert Reports to PDF File conv = new File("Report Forms/"); String[] filesconv = conv.list(only); for (int c = 0; c < filesconv.length; c++) { PdfWriter writer = null; try { Document output = new Document(PageSize.B4); Rectangle page = output.getPageSize(); page.setBackgroundColor(new java.awt.Color(255, 255, 255)); FileInputStream fs = new FileInputStream("Report Forms/" + filesconv[c]); FileOutputStream file = new FileOutputStream(new File("Report Forms/" + name + " " + exa + " FORM " + level + " " + year + ".pdf")); DataInputStream in =new DataInputStream(fs); BufferedReader br = new BufferedReader(new InputStreamReader( in )); writer = PdfWriter.getInstance(output, file); writer.createXmpMetadata(); //define the font for the disclaimer. com.lowagie.text.Font fontfooter = new com.lowagie.text.Font(com.lowagie.text.Font.COURIER, 12, com.lowagie.text.Font.BOLD); fontfooter.setColor(new java.awt.Color(0, 52, 154)); output.newPage(); writer.setPageEvent(new CustomBorder()); output.open(); writer.open(); FileInputStream fsname = new FileInputStream("Report Forms/" + filesconv[c]); BufferedReader brname = new BufferedReader(new InputStreamReader(fsname)); for (int p = 0; p < 0; p++) { brname.readLine(); } String custname = brname.readLine(); // System.out.println(custname); com.lowagie.text.Font f1 = new com.lowagie.text.Font(com.lowagie.text.Font.COURIER, 12, com.lowagie.text.Font.BOLD); f1.setColor(Color.BLACK); output.add(new Paragraph(new Phrase(custname, f1))); Image image = Image.getInstance("Student Images/" + num + ".png"); image.setAlignment(Image.ALIGN_RIGHT); image.setAbsolutePosition(450f, 10f); image.scalePercent(60, 50); Chunk chunk = new Chunk(image, 0, -20); HeaderFooter header = new HeaderFooter(new Phrase(chunk), false); header.setAlignment(Element.ALIGN_RIGHT); header.setBorder(Rectangle.NO_BORDER); output.setHeader(header); String line = ""; int lineNo = br.read(); while ((line = br.readLine()) != null) { for (lineNo = 0; br.ready(); lineNo++) { if (lineNo % 2 == 1) { line = br.readLine(); com.lowagie.text.Font f2 = new com.lowagie.text.Font(com.lowagie.text.Font.COURIER, 12, com.lowagie.text.Font.BOLD); f2.setColor(Color.BLACK); Paragraph p1 = new Paragraph(line, f2); p1.setAlignment(Element.TABLE); PdfPTable table = new PdfPTable(1); table.setWidthPercentage(100); PdfPCell cell = new PdfPCell(); cell.setBackgroundColor(new java.awt.Color(247, 246, 243)); cell.setBorder(Rectangle.NO_BORDER); cell.setUseBorderPadding(true); cell.setPadding(0); cell.setBorderColor(new java.awt.Color(247, 246, 243)); cell.addElement(p1); table.addCell(cell); output.add(table); } else { line = br.readLine(); com.lowagie.text.Font f2 = new com.lowagie.text.Font(com.lowagie.text.Font.COURIER, 12, com.lowagie.text.Font.BOLD); f2.setColor(new java.awt.Color(0, 52, 154)); Paragraph p1 = new Paragraph(line, f2); p1.setAlignment(Element.TABLE); PdfPTable table = new PdfPTable(1); table.setWidthPercentage(100); PdfPCell cell = new PdfPCell(); cell.setBorder(Rectangle.NO_BORDER); cell.setBorderWidthBottom(1f); cell.setUseBorderPadding(true); cell.setPadding(0); cell.setBorderColor(new java.awt.Color(255, 255, 255)); cell.addElement(p1); table.addCell(cell); // output.add(page); output.add(table); } } } output.close(); file.close(); fs.close(); fsname.close(); in .close(); writer.close(); } catch(Exception ce) { JOptionPane.showMessageDialog(this, ce, "Error", JOptionPane.PLAIN_MESSAGE); } } 

If I am not adding any image the conversion is happening fine but when I add image the PDF files are getting generated with 0KB and when you try to open, error comes that the file could not be opened because it is dammaged.