如何使用FileReader逐行读取 [英] How to read line by line by using FileReader

问题描述

感谢您的关注。

我创建了一个程序，我正在使用登录表单和注册表单。
一旦用户注册他们的电子邮件，他们的密码将被保存到 submit.txt 。然后他们将返回登录表单并输入他们的电子邮件和密码，这些邮件和密码保存在 submit.txt 。

I have created a program which I'm using a Login form and Register form. Once users register their email and their password will be saved it into submit.txt. Then they will turn back to login form and enter their email and password which are saved into submit.txt.

在我的代码中，我使用Register文件的写文件和Login Form的Read文件。但是，它不起作用。我在用于读取文件的代码中知道我的问题。你可以帮我理解吗？。

In my code, I'm using write file for Register form, and Read file for Login Form. But, it doesn't work. I know my problem in the code used for Read File. May you help me to realize that?.

非常感谢你的帮助。

 if (checkPassword(usern, hash)) {
    System.out.println("Logged in!");
    ChooseWindow ptb = new ChooseWindow();
    ptb.setVisible(true);
    LoginWindow.this.dispose();
 } else {
    System.out.println("Wrong password");
 }

 public boolean checkPassword(String username, String pass) {
    try {
        FileReader inFile = new  FileReader("/users/Ender/Desktop/GetUser/submit.txt");
        BufferedReader inStream = new BufferedReader(inFile);
        String inString;

        while ((inString = inStream.readLine()) != null) {}
        inStream.close();                       
    }catch (IOException e) {
        e.printStackTrace();
    }
    return false;
 }

推荐答案

这是我的代码阅读来自文件：

here is my code to read from a file :

 String line;

    try {

        BufferedReader bufferreader = new BufferedReader(new FileReader("C:\\Users\\ahmad\\Desktop\\aaa.TXT"));


        while ((line = bufferreader.readLine()) != null) {     
          /** 
            Your implementation  
          **/
            line = bufferreader.readLine();
        }

    } catch (FileNotFoundException ex) {
        ex.printStackTrace();
    } catch (IOException ex) {
        ex.printStackTrace();
    }

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