这个怎么弄，主要是怎么后面几步

Question

Create a Quiz class. This class will handle the interaction with the user. The constructor should take a string which is the filename name of the questions and answers to use. It should have a FlashCardReader and an instance variable that will hold the ArrayList of FlashCards.

The constructor uses the getFlashCards() method, in the instance of FlashCardReader it has declared, to create and fill the ArrayList with FlashCards.

Answer 1

/**
 * 创建一个测试类，该类将处理与用户的交互，
 */
public class Quiz {
    private FlashCardReader reader;
    private ArrayList<FlashCard> flashCards;

    /**
     * 构造方法
     * @param fileName 要使用的问题和答案的文件名
     */
    public Quiz(String fileName) {
        reader = new FlashCardReader(fileName);
        flashCards = reader.getFlashCards();
    }
}