public static void main(String[] args) { ArrayList<String> info = new ArrayList<>(); String[] add = new String[5]; BookShelf tana = new BookShelf(); info = BookReader.reader(); for (String spl : info) { add = spl.split(",", 5); Book book = new Book(add[0], add[1], add[2], add[3], add[4]); tana.bookinsert(book); } System.out.println(tana.booklist); BookWriter.writer(tana.booklist); }