create a folder structure outside of your application directory

private static final String UPLOAD_DIRECTORY = "uploads/img/"+now;

Date date = new Date() ;

SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy_MM_dd") ;

String now = dateFormat.format(date);

File uploadsFolder = new File(UPLOAD_DIRECTORY);

uploadsFolder.mkdirs();

File uploadedFile = new File(uploadsFolder, "fileName");