aspose.pdf is not working .Why ?

Hi,
     i am try to use aspose.pdf but it is not working. and i am trying to convert pdf to xls file.
     out is being created but not data exist in excel file. my pdf have some pages and some data in table or without table format.


i am using jar - aspose-pdf-9.7.1-jdk14.jar

my code is -

public class PdfToExcel {

    public static void main(String[] args) {
        // Load PDF document
        com.aspose.pdf.Document pdfDocument = new com.aspose.pdf.Document("RHY1.pdf");
        // Instantiate ExcelSave Option object
        com.aspose.pdf.ExcelSaveOptions excelsave = new com.aspose.pdf.ExcelSaveOptions();
        // Save the output to XLS format
        pdfDocument.save("RHY1.xls", excelsave);
System.out.println("Done");
    }

}