Can you import an excel file (whit data) into a database through a java aplication in jboss?

Greetings Im working in a java aplication in a jboss server and I was reading jbos's docs and i found how to export data. (it was very usefull actually ) but i can't find anithying about importing a file. of course i tried to solve this by my way using HSSWorkbook class and this is what I got:

public void saveexcelproducts() {

    try {
        System.out.println("into try");
        HSSFWorkbook libro = new HSSFWorkbook(xlsStr);
        // loop page by page , and record by record
        HSSFSheet hojita;
        HSSFRow filita= null;
        xlsTotalCarga = 0;
        xlsTotalLista = 0;
        erroresExcel = new ArrayList<HashMap>();
        cargaExcel = true;
        System.out.println("Before first for");
        for (int cntHoja = 0; cntHoja < libro.getNumberOfSheets(); cntHoja++) {
            hojita = libro.getSheetAt(cntHoja);
            System.out.println("first for executed");
            if (hojita.getLastRowNum() > 0)
                System.out.println("Files found: "+ hojita.getLastRowNum());
            //System.out.println("Type of cell: "+ filita.getCell(0).getCellType());
                //System.out.println("the number is "+ filita.getCell(0));

                System.out.println(" cnthoja > 0 ");
                for (int numRow = 1; numRow <= hojita.getLastRowNum(); numRow++) {
                    System.out.println("Second for");
                    xlsTotalLista++;
                    filita = hojita.getRow(numRow);
                    if (filita.getCell(0) != null && filita.getCell(0).getCellType() != HSSFCell.CELL_TYPE_BLANK

                            && filita.getCell(1) != null
                            && filita.getCell(1).getCellType() != HSSFCell.CELL_TYPE_BLANK
                            && filita.getCell(2) != null
                            && filita.getCell(2).getCellType() != HSSFCell.CELL_TYPE_BLANK
                            && filita.getCell(4) != null
                            && filita.getCell(4).getCellType() != HSSFCell.CELL_TYPE_BLANK
                            && filita.getCell(5) != null
                            && filita.getCell(5).getCellType() != HSSFCell.CELL_TYPE_BLANK
                            && filita.getCell(7) != null
                            && filita.getCell(7).getCellType() != HSSFCell.CELL_TYPE_BLANK
                            && filita.getCell(8) != null
                            && filita.getCell(8).getCellType() != HSSFCell.CELL_TYPE_BLANK  
                            && filita.getCell(9) != null
                            && filita.getCell(9).getCellType() != HSSFCell.CELL_TYPE_BLANK                              
                            ) {
                            System.out.println("IF executed");

                        Marca tmpMrc = marcaHome.registrarMarca(filita.getCell(4).getStringCellValue());
                        Proveedor tmpPrv = proveedorHome.registrarProveedor(filita.getCell(5).getStringCellValue());
                        Producto prd = new Producto();
                        prd.setCodigo(filita.getCell(0).getStringCellValue());
                        prd.setProveedor(tmpPrv);
                        prd.setMarca(tmpMrc);
                        prd.setLineaProducto(lineaProductoHome.registrarLineaProducto(
                                filita.getCell(2).getStringCellValue() )) ;
                        prd.setCategoria(categoriaHome
                                .getCategoria(filita.getCell(3).getStringCellValue()));
                        prd.setCosto((float) Math.round(new Float(filita.getCell(7).getNumericCellValue()) * 100) / 100);
                        prd.setTrasegar(Boolean.valueOf(filita.getCell(6).getStringCellValue()));
                        prd.setExento(false);
                        prd.setGravable(true);
                        prd.setNoSujeto(false);
                        prd.setNombre(filita.getCell(1).getStringCellValue());
                        prd.setDescripcion(filita.getCell(9).getStringCellValue());
                        prd.setMadre(buscarMadre(filita.getCell(8).getStringCellValue()));

                        select(prd);
                        boolean res = save();
                        if (!res) {
                            // Error 
                            // save the product
                            HashMap<String, String> errUnk = new HashMap<String, String>();
                            errUnk.put("row", numRow - 1 + "");
                            errUnk.put("cod", filita.getCell(0).getStringCellValue());
                            errUnk.put("msg", "Error saving the product.");
                            errUnk.put("sheet", hojita.getSheetName());
                            erroresExcel.add(errUnk);
                        } else
                            xlsTotalCarga++;
                        }
                }
        }
    } catch (Exception e) {
        e.printStackTrace();
    }
    cargaExcel = false;
    setXlsTotalCarga(xlsTotalCarga);
    setXlsTotalLista(xlsTotalLista);
    setErroresExcel(erroresExcel);

}

apparently all the values in the cell are null (even if they are filled) any help is wellcome