Import XFDF to PDF

final String ROOT  = "C:\\PdfAnnotation\\";
final String sourcePDF = "sample.pdf";
final String destPDF = "output.pdf";
final String sourceXFDF = "XFDFTest.xfdf";

try
{
// Specify the path of license file
License lic = new License();
    lic.setLicense(ROOT + "Aspose.Pdf.lic");
//create an object of PdfAnnotationEditor class
PdfAnnotationEditor editor = new PdfAnnotationEditor();
//bind input PDF file
editor.bindPdf(ROOT + sourcePDF);
//create a file stream for input XFDF file to import annotations
FileInputStream fileStream = new FileInputStream(ROOT + sourceXFDF);
//create an enumeration of all the annotation types which you want to import
editor.importAnnotationFromXfdf(fileStream);
//save output pdf file
editor.save(ROOT + destPDF);

} catch (Exception e) {
    System.out.println("exception: " + e.getMessage());
}