File src = new File(filePath);
FileInputStream fis = new FileInputStream(src);
XSSFWorkbook wb = new XSSFWorkbook(fis);
XSSFSheet sheet1 = wb.getSheetAt(0);
Why did they pass the src object to FileInputStream?
Why did they pass FileInputStream object to xssfworkbook?
Why they did'nt pass any objects for xssfsheet?
Why did they pass the src object to FileInputStream?
Because FileInputStream will need a File to instantiate. src is an instance of File.
Why did they pass FileInputStream object to xssfworkbook?
Because XSSFWorkbook needs a FileInputStream to instantiate. fis is a FileInputStream.
Why they did'nt pass any objects for xssfsheet?
Because the sheet can be retrieved from wb using getSheetAt.