以下是我用來從文件中讀取并將詳細信息保存在ArrayList兩個類Iphone和 中的代碼Ipad，但顯然這出現(xiàn)了問題。我為這段代碼得到的輸出是：Iphone@28d93b30 和 IndexOutOfBoundException 用于 ipads.get(0)try {            fScanner = new Scanner(new File("apple.txt"));        }         catch (FileNotFoundException e) {            System.out.println(e.toString());        }        ArrayList<Iphone> iphones = new ArrayList<>();        ArrayList<Ipad> ipads = new ArrayList<>();        while(fScanner.hasNextLine()) {            String line = fScanner.nextLine();            Scanner lineScanner = new Scanner(line);            if(lineScanner.next().equals("IPHONE")) {                    String model = "IPHONE"+lineScanner.useDelimiter(",").next();                    String scrSze = lineScanner.useDelimiter(",").next();                    String proc = lineScanner.useDelimiter(",").next();                    String simT = lineScanner.useDelimiter(",").next();                    String clr = lineScanner.useDelimiter(",").next();                    String rom = lineScanner.useDelimiter(",").next();                    String is3dtouch = lineScanner.useDelimiter(",").next();                    String pric = lineScanner.useDelimiter(",").next();                    iphones.add(new Iphone(model,scrSze,proc,simT,clr,rom,is3dtouch,pric));             }            else if(lineScanner.next().equals("IPAD")) {                    String model = "IPAD"+lineScanner.useDelimiter(",").next();                    String scrSze = lineScanner.useDelimiter(",").next();                    String proc = lineScanner.useDelimiter(",").next();                    String iswifi = lineScanner.useDelimiter(",").next();                    String clr = lineScanner.useDelimiter(",").next();                    String memo = lineScanner.useDelimiter(",").next();                    String pric = lineScanner.useDelimiter(",").next();                    ipads.add(new Ipad(model,scrSze,proc,iswifi,clr,memo,pric));            }        }我很感激對上述問題的一個很好的解釋。