protected void testExcel() throws IOException{        String path=getServletContext().getRealPath("/WEB-INF/Template/timeSequence.xlsx");                System.out.println(path);                InputStream input=new FileInputStream(path);                XSSFWorkbook  workBook=new XSSFWorkbook(input);                XSSFSheet hssfSheet = workBook.getSheet("Sheet1");                XSSFRow hssfRow=null;                XSSFCell cell=null;                XSSFFont font=workBook.createFont();                font.setFontName("GE Inspira");                                OutputStream out=new FileOutputStream(path);                XSSFSheet hssfSheet2 = workBook.createSheet("Sheet2");                for (int i = 0; i < hssfSheet.getLastRowNum(); i++) {                                        hssfRow=hssfSheet.getRow(i);                    XSSFRow row=hssfSheet2.createRow(i);                    for (int j = 0; j < hssfRow.getLastCellNum(); j++) {                        CellStyle style=workBook.createCellStyle();                        style.setFont(font);                        cell=hssfRow.getCell(j);                        XSSFCell cellWrite=row.createCell(j);                        if(cell.getCellType()==cell.CELL_TYPE_STRING){                            //set value for strings                            cellWrite.setCellValue(cell.getStringCellValue());                            cellWrite.setCellStyle(style);                        }else if(cell.getCellType()==cell.CELL_TYPE_NUMERIC){                            //set Value for date                            if(HSSFDateUtil.isCellDateFormatted(cell)){                                DateFormat format=new SimpleDateFormat();                                short df=workBook.createDataFormat().getFormat("yyyy-MM-dd");                                 style.setDataFormat(df);                                cellWrite.setCellStyle(style);                                SimpleDateFormat dateFormat=new SimpleDateFormat("yyyy/MM/dd");                                String readDateValue=dateFormat.format(cell.getDateCellValue());                                cellWrite.setCellValue(readDateValue);                            }else{                                //set value for numeric                                cellWrite.setCellValue(cell.getNumericCellValue());                                cellWrite.setCellStyle(style);                            }                        }else if(cell.getCellType()==cell.CELL_TYPE_BLANK){                            //set value for blank                            cellWrite.setCellValue("");                            cellWrite.setCellStyle(style);                        }else{                            cellWrite.setCellValue(cell.getStringCellValue());                            cellWrite.setCellStyle(style);                        }                    }                }                workBook.write(out);    }