加载文件并获取其内容对我来说崩溃了

发布于 2024-09-01 21:48:54 字数 653 浏览 6 评论 0原文

private class Lytterklasse implements ActionListener{
  public void actionPerformed(ActionEvent e) {
    JFileChooser chooser = new JFileChooser();
    FileNameExtensionFilter filter = new FileNameExtensionFilter(
            "Sudoku Tekstfiler", "txt");
    chooser.setFileFilter(filter);
    int returnVal = chooser.showOpenDialog(getParent());
    String filnavn=chooser.getName();
    In innfil=new In(filnavn);
    int type=innfil.inInt();
    int lengdeBoks=innfil.inInt();
    int breddeBoks=innfil.inInt();
    for(int i=0;i<type*type;i++){
      tallene[i]=innfil.nextChar();
    }
  }
}

为什么这会让我崩溃？我想不通。请帮忙！

原文

private class Lytterklasse implements ActionListener{
  public void actionPerformed(ActionEvent e) {
    JFileChooser chooser = new JFileChooser();
    FileNameExtensionFilter filter = new FileNameExtensionFilter(
            "Sudoku Tekstfiler", "txt");
    chooser.setFileFilter(filter);
    int returnVal = chooser.showOpenDialog(getParent());
    String filnavn=chooser.getName();
    In innfil=new In(filnavn);
    int type=innfil.inInt();
    int lengdeBoks=innfil.inInt();
    int breddeBoks=innfil.inInt();
    for(int i=0;i<type*type;i++){
      tallene[i]=innfil.nextChar();
    }
  }
}

Why does this crash on me? I cant figure it out. Please help!

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善良天后 2024-09-08 21:48:54

从您的代码中不清楚 In 类是什么。此外，您还访问了 tallene 数组，该数组既没有在代码中声明也没有初始化。也许

tallene = new char[type*type];

在 for 循环之前可以解决您的问题。为了获得更好的答案，我们需要更多详细信息（尤其是您正在经历什么样的“崩溃”......）

From your code it's not clear, what the In class is. Also you're accessing the tallene array which is neither declared nor initialized in your code. Maybe a

tallene = new char[type*type];

before the for loop could solve your problem. For a better answer, we would need more details (especially what kind of 'crash' you're experiencing ...)

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