如何从外部文件向 JComboBox 添加项目？

Question

请我需要一些帮助来从外部文件向 JComboBox in Java 添加项目。

这是我到目前为止的代码：

 //Loading the Names:

        File Names_File = new File("Data" + File.separator + "Names.txt");
        FileInputStream fis = null;
        BufferedInputStream bis = null;
        DataInputStream dis = null;

        String str_Data = ""; //For storing the input from the file.

        try
        {
            fis = new FileInputStream(Names_File);

            // Here BufferedInputStream is added for fast reading.
            bis = new BufferedInputStream(fis);
            dis = new DataInputStream(bis);


            str_Data = dis.readLine(); //Reading the line from the file.

            StringTokenizer st = new StringTokenizer(str_Data); //Tokenizing the line.

            //The below line adds only one item. The objective is adding all the items.

            //*** Requesting help here ***

            cmb_Name.addItem(st.nextToken("|"));

            //*** Requesting help here ***

            // Disposing and closing all the resources after using them.
            fis.close();
            bis.close();
            dis.close();
        }

        catch (FileNotFoundException e)
        {
            System.err.println("Error: File not found!");
            JOptionPane.showMessageDialog(null, "Error: File not found!", "Error Message",
                                          JOptionPane.ERROR_MESSAGE);
        }

        catch (IOException e)
        {
            System.err.println("Error: Unable to read from file!");
            JOptionPane.showMessageDialog(null, "Error: Unable to read from file!", "Error Message",
                                          JOptionPane.ERROR_MESSAGE);
        }

主要是我的外部文件的格式如下：

James|Robert|Alice

名称之间用 "|"< 分隔/strong> 符号。

我的上面的代码在此示例中仅添加一个元素，即（“James”）。我需要将所有三个添加到循环或其他内容中。我的想法是，我不确定我的外部文件中有多少个名字。因此，使用简单的计数器没有帮助。

任何建议将不胜感激！

预先感谢您的帮助

Answer 1

试试这个：

   StringTokenizer st = new StringTokenizer(str_Data); //Tokenizing the line.

   while(st.hasMoreTokens()) {
        cmb_Name.addItem(st.nextToken("|"));
   }