Java 缓冲 Reader 映射

Question

我正在尝试 reader 从如下存储的文件中进行测验；

第一行是标识符和问题标识符，然后是问题标题和下一个问题，答案标题和答案，最后是所选答案。

我正在尝试读取文件，然后使用 HashMap 存储它

16 TF
Question
Because an ArrayList is an indexed collection, you can access its elements using a subscript. 
Answer
False
True
Selected
1

258 MC
Question
Fill in the blank. A Node is generally defined inside another class, making it a(n) ____ class.
Answer 
Private 
Inner 
Public 
Internal 
Selected 
2

37 L5
Question
How would you rate your programming skills? 
Answer
Excellent
Very good
Good
Not as good as they should be
Poor
Selected
-1

我的代码：

  Quiz newquiz = new Quiz();
    List<String> newArray = new ArrayList<String>();
    Map<Integer, String> newquizmap = new HashMap<Integer, String>();
    BufferedReader BufferedReader = new BufferedReader(new FileReader('file.txt'));
    String line = null;

    while ((line = BR.readLine()) != null) {
        String nuquiz[] = line.split("   ");
        BufferedReader.readLine();

       newquiz.newquestionid = Integer.parseInt(parts[0]);



             lines.add(line);
               newquizmap.put(newquiz.newquestionid, newArray.toString());


            line = BufferedReader.readLine();

            System.out.println(newquizmap);
        } 

    } BR.close();

我知道这是不对的，我什至不认为它很接近，但我真的很挣扎，有人能给我任何帮助吗？

编辑：

          Quiz newquiz = new Quiz();
    List<String> newArray = new ArrayList<String>();
    Map<Integer, String> newquizmap = new HashMap<Integer, String>();
    BufferedReader BufferedReader = new BufferedReader(new FileReader('file.txt'));
    String line = null;

    while ((line = BR.readLine()) != null) {
        String nuquiz[] = line.split("   ");
        BufferedReader.readLine();

       newquiz.newquestionid = Integer.parseInt(parts[0]);



             lines.add(line);
               newquizmap.put(newquiz.newquestionid, newArray.toString());


            line = BufferedReader.readLine();

            System.out.println(newquizmap);
        } 

    } BR.close();

试过这段代码，它似乎用每个值填充每个映射键？

Answer 1

一种方法是使用 java 对象作为 hashmap 值。创建一个新的 class 以包含以下属性（修改以处理您所有的问题用例）：

private String questionId; //This will hold question Id - TF    
private String question; //This will hold the Question - Because an ArrayList is an indexed collection, you can access its elements using a subscript. 
    private List<String> choices; //This will hold the choices - Private Inner Public Internal 
    private Integer selectedChoice; //This will hold the answer

在 class.

中包含参数化构造函数和其他必需的方法

解析文件，遍历内容，创建这个新 class 的对象并添加到以 "id" 为键和 "pojo object" 为值的 hashmap。

注意：请修复您的 java 代码中的其他一些问题（格式、编码标准，例如以大写开头的变量名称、QuestionSet、StdOut.. 等）

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