用文本文件填充JCombobox [英] Populating JCombobox with a text file

问题描述

可能重复：

如何从文本文件中填充JComboBox？

我是Java新手，只有2个月的经验。任何人都可以帮我用一个包含5行的文本文件填充 JComboBox 吗？我查看了Google上的代码，但我一直在收到错误。

I am new to programming Java with only 2 months of experience. Can anyone help me to populate a JComboBox with a text file, consisting of 5 lines? I have looked at code on Google, but I keep getting errors.

推荐答案

private void populate() {
    String[] lines;
    lines = readFile();

    jComboBox1.removeAllItems();

    for (String str : lines) {
       jComboBox1.addItem(str);
    }
}

这是readFile（）。 来自此网站

Here is readFile(). From this site

private String[] readFile() {
  ArrayList<String> arr = new ArrayList<>();
  try {
     FileInputStream fstream = new FileInputStream("textfile.txt");
     BufferedReader br = new BufferedReader(new InputStreamReader(fstream));
     String strLine;
     while ((strLine = br.readLine()) != null) {
        arr.add(strLine);
     }
     in.close();
  } catch (Exception e) {
  }
  return arr.toArray(new String[arr.size()]);
}

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