尝试将 txt 文件中的项目添加到 jList

发布于 2024-11-25 06:13:45 字数 904 浏览 0 评论 0原文

我有以下在单击按钮时执行的 try catch 块。

  try {
//picking up the file I want to read in
 BufferedReader in = new BufferedReader(new FileReader("C:\\users\\me\\desktop\\blah.txt"));
 String line;                                           
 try {
    //read through the file until there is nothing left and add each line to list
         while((line = in.readLine()) != null){  
            jList1.add(line, jList1);
                    }

               } catch (IOException ex) {
                    Logger.getLogger(Frame2.class.getName()).log(Level.SEVERE, null, ex);
           }
      } catch (FileNotFoundException ex) {
                Logger.getLogger(Frame2.class.getName()).log(Level.SEVERE, null, ex);
  }

我可以成功 System.out.println(line) 所以我知道有些东西工作正常。我无法使用文本文件中的行填充列表。上面的代码告诉我，我无法将容器父级添加到自身。

尝试查找更多信息只会让我更加困惑。我遇到过一些地方说 jLists 比这更复杂？

原文

I have the following try catch block that executes on a button click.

  try {
//picking up the file I want to read in
 BufferedReader in = new BufferedReader(new FileReader("C:\\users\\me\\desktop\\blah.txt"));
 String line;                                           
 try {
    //read through the file until there is nothing left and add each line to list
         while((line = in.readLine()) != null){  
            jList1.add(line, jList1);
                    }

               } catch (IOException ex) {
                    Logger.getLogger(Frame2.class.getName()).log(Level.SEVERE, null, ex);
           }
      } catch (FileNotFoundException ex) {
                Logger.getLogger(Frame2.class.getName()).log(Level.SEVERE, null, ex);
  }

I can successfully System.out.println(line) so I know something is working right. I am unable to populate the list with the lines from the text file. The above code tells me I cannot add containers parent to self.

Attempting to find more information has only confused me more. I have come across some places that say jLists are more complciated than this?

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明月松间行 2024-12-02 06:13:45

存在很多错误，太多了，无法一一评论：

1) 基本 I/O

2) 异常

3) <一href="http://download.oracle.com/javase/tutorial/uiswing/components/list.html" rel="nofollow">如何使用列表

4) 示例

    BufferedReader in = null;
    String line;
    DefaultListModel listModel = new DefaultListModel();
    try {
        in = new BufferedReader(new FileReader("C:\\users\\me\\desktop\\blah.txt"));
        while ((line = in.readLine()) != null) {
            listModel.addElement(line); //(String.valueof(line));
        }
    } catch (IOException ex) {
        Logger.getLogger(Frame2.class.getName()).log(Level.SEVERE, null, ex);
    } finally {
        if (in != null) {
            in.close();
        }
    }
    JList jList1 = new JList(listModel);

There are many mistakes present, too many to comment on all of them:

1) Basic I/O

2) Exceptions

3) How to Use Lists

4) Examples

    BufferedReader in = null;
    String line;
    DefaultListModel listModel = new DefaultListModel();
    try {
        in = new BufferedReader(new FileReader("C:\\users\\me\\desktop\\blah.txt"));
        while ((line = in.readLine()) != null) {
            listModel.addElement(line); //(String.valueof(line));
        }
    } catch (IOException ex) {
        Logger.getLogger(Frame2.class.getName()).log(Level.SEVERE, null, ex);
    } finally {
        if (in != null) {
            in.close();
        }
    }
    JList jList1 = new JList(listModel);

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