java - 需要阻止txt文件中的单词覆盖JAVA

Question

您好，我正在尝试使用 .txt 文件创建单词列表，其中我从 JOptionPane 窗口获取用户输入，并将其存储在文本文件的新行中。我遇到的问题是，当我输入多个单词时，它会覆盖已经存在的数据。我希望它跳过一行并将其添加到当前列表中。这是我的代码:

public static void Option1Method() throws IOException
{
     FileWriter aFileWriter = new FileWriter("wordlist.txt");
     PrintWriter out = new PrintWriter(aFileWriter);
     String word = JOptionPane.showInputDialog(null,"Enter word or phrase: ");

     out.println(word);

     out.close();
     aFileWriter.close();
}

Answer 1

只需将 true 放在文件写入器的末尾即可使其切换到追加模式:

public static void Option1Method(){
   FileWriter aFileWriter = null;
   PrintWriter out = null;
      try {
         aFileWriter = new FileWriter("wordlist.txt",true);
         out = new PrintWriter(aFileWriter);
         String word = JOptionPane.showInputDialog(null, "Enter word or phrase: ");
         out.println(word);
      } catch (IOException iOException) {
      } catch (HeadlessException headlessException) {
      } finally {
         out.close();
         try {
            aFileWriter.close();
         } catch (IOException iOException) {
         }
      }
}