为什么 BufferedWriter 不写入文件中的所有行？

Question

这是我的代码。如果我输入 3 行文本，然后键入 "exit"，它只会将最后一行文本写入文件。我错过了什么？谢谢

`public class WriteFile {
    public static void writeFile() throws IOException {
        Scanner sc = new Scanner(System.in);
        String text;
        File file = new File("file.txt");
        BufferedWriter out = new BufferedWriter(new FileWriter(file));
        while (!sc.nextLine().equalsIgnoreCase("exit")) {
                text = sc.nextLine();
                out.write(text);
                out.newLine();

            }
        sc.close();
        out.flush();
        out.close();
    }
}`

Answer 1

是的，你应该使用 append() 方法，删除最后插入的文本：

public static void writeFile() throws IOException {
        Scanner sc = new Scanner(System.in);
        String text = "";
        File file = new File("file.txt");
        BufferedWriter out = new BufferedWriter(new FileWriter(file));
        while (!(text = sc.nextLine()).equalsIgnoreCase("exit")) {
            out.append(text);
            out.newLine();
        }
        sc.close();
        out.flush();
        out.close();
    }

为什么 BufferedWriter 不写入文件中的所有行？

Why BufferedWriter doesn' write all lines in file?

bufferedwriter

writetofile