java - 如何从特定结构的txt文件中获取试题？

Question

我想制作一个程序，从具有特定结构的文件中获取问题及其答案，并让用户给出答案。该程序还必须计算正确答案并将其显示给用户。

这是文本文件结构的示例:

What year is it right now?
2
1) 1900
2) 2014
3) 3200
---
Which is the biggest country in the world?
1
1) Russia
2) United States of America
3) United Kingdom
---

这是我写的代码，但有问题，我看不出到底是什么:

public class testLoader {

private static BufferedReader br;
private static int answerCounter;

public static void main(String[] args) {

    try {
        br = new BufferedReader(new FileReader("D:/test.txt"));
        StringBuilder sb = new StringBuilder();
        String line = br.readLine();

        while (line != null) {
            String answer=null;
            if(line.startsWith("*")){
                answer = line;
            }
            while (line != "---") {
                line = br.readLine();
                sb.append(line);
                sb.append(System.lineSeparator());
            }
            System.out.println(sb.toString());
            answerCheck(answer);

            line = br.readLine();
        }

    } catch (IOException e) {
        e.printStackTrace();
    } finally {
        try {
            br.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    System.out.println("You have " + answerCounter + "correct answers");
}

public static void answerCheck(String rightAnswer) {
    System.out.println("What's your answer?");
    Scanner input = new Scanner(System.in);
    String answer = input.nextLine();
    answerCounter = 0;
    if (answer == rightAnswer){
        answerCounter++;
        System.out.println("Correct!");
    } else {
        System.out.println("Wrong!");
    }
}

}

我将非常感谢您提供的任何帮助。如果有更好的方法来完成任务，我将很高兴看到。

提前致谢!

Answer 1

这是您的程序的更正版本。你那里有一些错误。我的程序在您发布的文件格式上运行正常在这里(没有星号)。

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.util.Scanner;

public class testLoader {

    private static BufferedReader br;
    private static int answerCounter = 0;

    public static void main(String[] args) {

        try {
            br = new BufferedReader(new FileReader("C:/Various/test.txt"));
            StringBuilder sb = new StringBuilder();
            String line = null;

            do {
                line = br.readLine();
                if (line != null) {
                    sb.append(line);
                    sb.append(System.getProperty("line.separator"));
                } else {
                    break;
                }
                String answer = br.readLine().trim();
                while (!"---".equals(line)) {
                    line = br.readLine();
                    sb.append(line);
                    sb.append(System.getProperty("line.separator"));
                }
                System.out.println(sb.toString());
                answerCheck(answer);
                sb.setLength(0);

            } while (true);

        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            try {
                br.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }

        System.out.println("You have " + answerCounter + " correct answers");
    }

    public static void answerCheck(String rightAnswer) {
        System.out.println("What's your answer?");
        Scanner input = new Scanner(System.in);
        String answer = input.nextLine();
        // answerCounter = 0;
        if (answer.equals(rightAnswer)) {
            answerCounter++;
            System.out.println("Correct!");
        } else {
            System.out.println("Wrong!");
        }
    }

}