无法实例化对象

Question

我正在尝试FlashCard在CardSet班上创建一个对象.问题是我的FlashCard对象无法实例化.我的类都不是抽象的,也不是接口.

CardSet类的第19行发生错误:
this.add(new FlashCard(term,definition)); .

public class CardSet<FlashCard> extends LinkedList<FlashCard> {


private String nameOfSet;
private FlashCard activeCard;
private String term;
private String definition;


public CardSet(String nameOfSet)
{
    this.nameOfSet = nameOfSet;
}


public void addCard(String term, String definition)
{
    this.term = term;
    this.definition = definition;
    // cannot instantiate
    this.add(new FlashCard(term, definition));
}


}

public class FlashCard {

    private String definition;
    private String term;


    public FlashCard(String term, String definition)
    {
        this.term = term;
        this.defintion = definition;
    }

    public String getTerm()
    {
        return term;
    }

    public String getDefintion()
    {
        return definition;
    }
}

Answer 1

你隐藏了类的定义FlashCard.删除第一个通用参数

public class CardSet extends LinkedList<FlashCard> {