個のexcelからバックアップをインポート

public List<ResourceCWD> loaddata1(String filename) throws RuntimeException{
        FileInputStream fis = null;
        XSSFWorkbook xwb = null;
        List<ResourceCWD> dataList = new ArrayList<ResourceCWD>();
        
        try {
            fis = new FileInputStream(filename);
            xwb = new XSSFWorkbook(fis);
            XSSFSheet resourceSheet = null;
            XSSFRow resourcerow = null;
            
            //To parse the start_date and Effective_end_date
            SimpleDateFormat sdf = new SimpleDateFormat("dd-MMM-yyyy", Locale.US);

            resourceSheet = xwb.getSheet(sheetname1);

            log.info("Retrieve file: [" + filename + " ]");
            
            for (int i = resourceSheet.getFirstRowNum() + 1; i < resourceSheet
                    .getPhysicalNumberOfRows(); i++) {
                ResourceCWD res = new ResourceCWD();
                resourcerow = resourceSheet.getRow(i);
                if (resourcerow.getCell(0) == null)
                    break;

                res.setAm(resourcerow.getCell(0) == null ? "" : resourcerow
                        .getCell(0).getStringCellValue());
                res.setP_start_date(resourcerow.getCell(1) == null ? null
                        : resourcerow.getCell(1).getDateCellValue());
                res.setProject_end_date(resourcerow.getCell(2) == null ? null
                        : resourcerow.getCell(2).getDateCellValue());
                res.setWon(resourcerow.getCell(3) == null ? null : resourcerow
                        .getCell(3).getRawValue());
                res.setProject_name(resourcerow.getCell(4) == null ? ""
                        : resourcerow.getCell(4).getStringCellValue());
                res.setEmp_no(resourcerow.getCell(5) == null ? null : resourcerow
                        .getCell(5).getRawValue());
                res.setEmp_name(resourcerow.getCell(6) == null ? "" : resourcerow
                        .getCell(6).getStringCellValue());
                res.setAllocation_start_date(resourcerow.getCell(7) == null ? null
                        : resourcerow.getCell(7).getDateCellValue());
                res.setAllocation_end_date(resourcerow.getCell(8) == null ? null
                        : resourcerow.getCell(8).getDateCellValue());
                res.setPm(resourcerow.getCell(10) == null ? "" : resourcerow
                        .getCell(10).getRawValue());
                res.setCwd_name(resourcerow.getCell(11) == null ? "" : resourcerow
                        .getCell(11).getRawValue());
                res.setSso_id(resourcerow.getCell(12) == null ? "" : resourcerow
                        .getCell(12).getRawValue());
                res.setStart_date(resourcerow.getCell(15) == null ? null : sdf
                        .parse(resourcerow.getCell(15).getRawValue()));
                res.setEff_end_date(resourcerow.getCell(16) == null ? null : sdf
                        .parse(resourcerow.getCell(16).getRawValue()));
                dataList.add(res);
            }
            
        } catch (ParseException e) {
            e.printStackTrace();
            //log.error(e.toString());
            throw new RuntimeException("Excel Format error!");
        } catch (FileNotFoundException e) {
            e.printStackTrace();
            log.error(e.toString());
            throw new RuntimeException("File Not Found!");
        } catch (IOException e) {
            e.printStackTrace();
            log.error(e.toString());
            throw new RuntimeException("I/O Exception!");
        }finally{
            try {
                fis.close();
            } catch (IOException e) {
                log.error(e.getMessage());
                throw new RuntimeException("Excel Close Exception!");
            }
        }
        log.info("Retrieve file: [" + filename + " ] success!");

        return dataList;

    }