title: Facing issue on Itext checkBox on CellField
body: <p>I am using class the below to add check box and along with some text</p>
  
  <pre><code>Class A {
      public void createFourColumnBody() throws DocumentException, FileNotFoundException {
          com.itextpdf.text.Document document = new com.itextpdf.text.Document(PageSize.A4);
          com.itextpdf.text.pdf.PdfWriter writer1 = PdfWriter.getInstance(document, new FileOutputStream("D:\\PDF_Java.pdf", false));
          document.open();
          float[] widths = new float[] {
              30 f, 30 f
          };
          com.itextpdf.text.pdf.PdfPTable table = new com.itextpdf.text.pdf.PdfPTable(widths);
          table.setWidthPercentage(100);
          table.setHorizontalAlignment(Element.ALIGN_LEFT);
          PdfFormField checkboxGroupField = PdfFormField.createCheckBox(writer1);
          PdfPCell cell = table.getDefaultCell();
          PdfPCell cell12;
          cell = new PdfPCell(new Paragraph("checkbox3"));
          table.addCell(cell);
          cell12 = new PdfPCell(table.getDefaultCell());
          cell12.setCellEvent(new CellField(writer1, checkboxGroupField, true));
          table.addCell(cell12);
          writer1.addAnnotation(checkboxGroupField);
          document.add(table);
          document.close();
      }
  
      public static void main(String[] args) throws DocumentException, FileNotFoundException {
          A a1 = new A();
          a1.createFourColumnBody();
      }
  }
  </code></pre>
  
  <p>I am facing the issue at the fallowing line in the above code</p>
  
  <p><code>cell12.setCellEvent(new CellField(writer1, checkboxGroupField, true));</code></p>
  
  <p>The issue is 'Can not find the symbol class CellField'</p>
  
  <p>Any help ? </p>