扫描jtextfield中的输入，写入文本文件，再次扫描新的输入，直到用户关闭面板

Question

我是个新手，这里有一个程序，它扫描两个jtextfield以查找输入，并将输入写入两个文本文件。我试图为两个jtextfield输入一个新的输入，但显然它没有将新的输入写入文本文件。这是我的密码。有人能帮帮我吗？

        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。你需要做的是确保它附加new FileOutputStream(file, true);

此外，我还没有测试你的代码，但你似乎只关闭了流，而只声明和初始化了流一次，所以下次你尝试写它时会失败，因为流已经关闭。尝试将close()替换为flush()，并在JFrame中添加WindowListener。然后，您可以关闭windowClosing上的流。据我所知，您需要对流进行全局声明。