title: Create Excel File Using jExcel
body: <p>I made an excel file using jExcel API, but when I tried to open that file I got error filename.xls:file format is not valid and I can not open this file, here is my Java code</p>
  
  <pre><code>File file = new File("C:\\Users\\Giga\\Desktop\\yvela.xls");
      WritableWorkbook wb = Workbook.createWorkbook(file);
  
      WritableSheet wsheet = wb.createSheet("First Sheet", 0);
  
      int row = 0;
  
      for (Student student : students) {
          wsheet.addCell(new Label(0, row, student.getName()));
          wsheet.addCell(new Label(1, row, student.getSurname()));
          row++;
      }
  
      wb.close();
  </code></pre>