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加載/保存GUI游戲-NoSuchElementException錯誤

[英]Load/Save GUI game — NoSuchElementException error

我對在Java中使用GUI和JPanel非常陌生。 現在,我正在開發一個可以保存和加載的游戲。 保存后,它需要一個JArray,並根據是否在某處或某張圖片上沒有任何內容,將0、1、2 0s, 1s, and 2s保存到文件中。 加載時,它查看0s, 1s, and 2s ,並在圖片的相應位置(在for循環中)將其替換為圖片或不顯示任何內容。

當我加載游戲時,幾乎不會通過“ NoSuchElementException ”加載和出錯。 這是我的負擔:

 public void loadGame() throws FileNotFoundException{

        String fileName = JOptionPane.showInputDialog("What is your file's name?") + ".txt";
        Scanner reader = new Scanner(new FileReader(fileName));
         playerOne = reader.next();
         playerTwo = reader.next();
         counter = reader.nextInt();
        for (int i = 1; i < grid_height-1; i++) {
            for (int j = 1; j <= grid_width-1; j++) {

                    if(reader.nextInt() == 1){game[i][j].setIcon(p1);}
                    if(reader.nextInt() == 2){game[i][j].setIcon(p2);} 
                    else if(reader.nextInt() == 0){game[i][j].setIcon(null); } } } 

    reader.close(); 
} 

    }

如果需要,我的保存:

        public void saveGame() throws FileNotFoundException{
        String fileName = JOptionPane.showInputDialog("What will you name your file?") + ".txt";
        PrintWriter out = new PrintWriter(fileName);
        out.println(playerOne);
        out.println(playerTwo);
        out.println(counter);
        for (int i = 1; i < grid_height-1; i++) {
            for (int j = 1; j <= grid_width-1; j++) {
                if(game[i][j].getIcon() == null){out.println(0); }
                else if(game[i][j].getIcon() == p1){out.println(1);}
                else if(game[i][j].getIcon() == p2){out.println(2); }
            }
        }
        out.close();
        JOptionPane.showMessageDialog(null, "Saved successfully!", "Saved", 
                JOptionPane.PLAIN_MESSAGE);

    }

任何幫助將非常感激。 該錯誤通常發生在代碼中的if(reader.nextInt()==#)處。 我確保文件中也有一個整數。

您應該正確保存nextInt的返回值,並將其用於比較。

public void loadGame() throws FileNotFoundException{

       //your code here ........
        for (int i = 1; i < grid_height-1; i++) {
            for (int j = 1; j <= grid_width-1; j++) {
                    if(reader.hasNext()){
                         int next = reader.nextInt(); //save the return value and use it for comparision

                         if (next == 1){game[i][j].setIcon(p1);}
                         if (next  == 2){game[i][j].setIcon(p2);} 
                         else if(next  == 0){game[i][j].setIcon(null);
                    } //close the if loop
        //rest of your code here .......

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