java - 扫描 jtextfield 进行输入，写入文本文件，再次扫描新输入，直到用户关闭面板

Question

我是一个新手，我这里有一个程序，它扫描两个 jtextfields 中的输入并将输入写入两个文本文件。我尝试为两个 jtextfields 输入新的输入，但显然它不会将新的输入写入文本文件。这是我的代码。有人可以帮我吗？

        File outFile = new File("Z://Question.txt");
        FileOutputStream outFileStream = new FileOutputStream(outFile);
        PrintWriter outStream = new PrintWriter(outFileStream);
        File outFile2 = new File("Z://Answer.txt");
        FileOutputStream outFileStream2 = new FileOutputStream(outFile2);
        PrintWriter outStream2 = new PrintWriter(outFileStream2);

        JTextField question = new JTextField(30);
        JTextField answer = new JTextField(15);

        File inFile = new File("Z://Question.txt");
        FileReader myFileReader = new FileReader(inFile);
        Scanner sc = new Scanner(myFileReader);
        File inFile2 = new File("Z://Answer.txt");
        FileReader myFileReader2 = new FileReader(inFile2);
        Scanner sc2 = new Scanner(myFileReader2);

        rate.addActionListener(new ActionListener() {

        public void actionPerformed(ActionEvent e) {
        String ques = question.getText();
        String ans = answer.getText();
        outStream.write(ques);
        outStream.close();
        outStream2.write(ans);
        outStream2.close();
        String s = sc.nextLine();
        String[] question2 = s.split(" ");
        System.out.print("Question: ");
        for (int i = 0; i < question2.length; i++) {
            System.out.print(question2[i] + " ");
            x++;
        }                                                               //debug
        String[] QEquivalent = new String[question2.length];
        System.out.println();
        System.out.println("Number of words in the question: " + x);
        String s2 = sc2.nextLine();
        String[] Answer = s2.split(" ");
        System.out.print("Answer/s: ");
        for (int c = 0; c < Answer.length; c++) {
            System.out.print(Answer[c] + " ");
        } 
        }
        });

Answer 1

当您仅通过传入文件来构造 FileOutputStream 时，默认情况下，它不会追加。为了确保它附加，您需要做的是 new FileOutputStream(file, true);

此外，我还没有测试您的代码，但看来您正在关闭流，而仅声明和初始化流一次，因此下次您尝试编写时，它将失败，因为流已关闭。尝试将 close() 替换为 flush()，并向您的 JFrame 添加一个 WindowListener。然后，您可以在 windowClosing 上关闭流。据我所知，您需要对流进行全局声明。