Java泛型绑定不匹配错误

我正在用Java编写一个通用链表实现。代码是

public class LinkedList<T> {
    private Node<T> top;
    private int no_of_items;

    private class Node<T extends Comparable<? super T>> {
        T data;
        Node<T> next;
    }

    public LinkedList() {
        top = null;
    }

    public boolean isEmpty() {
        return (top == null);
    }

    public void insert(T item) {
        Node<T> node = new Node<T>();
        node.data = item;
        node.next = top;
        if(isEmpty()) {
            top = node;
        } else {
            Node<T> n = top; 
            while(n.next != null) {
                n = n.next;
            }
            n.next = node;
        }
        no_of_items++;

    }
}

---

我无法找出这里的问题所在。

我自己解决了错误。正确的代码应该是

    public class LinkedList<T extends Comparable<? super T>> {
private Node top;
private int no_of_items;

private class Node {
    T data;
    Node next;
}

public LinkedList() {
    top = null;
}

public boolean isEmpty() {
    return (top == null);
}

public void insert(T item) {
    Node node = new Node();
    node.data = item;
    node.next = top;
    if(isEmpty()) {
        top = node;
    } else {
        Node n = top; 
        while(n.next != null) {
            n = n.next;
        }
        n.next = node;
    }
    no_of_items++;

}
    }

---

public class LinkedList不编辑带有答案的问题，而是将其作为答案发布并接受。由于我是新成员，我在10小时内不允许发布自己问题的答案，因此我对其进行了编辑。如果你已经解决了你的问题，那么你可以将它标记为“已接受”。没有任何理由在标题中添加“已解决”，因为公认的答案可以被视为等效答案。感谢Makoto删除“已解决”。最初是我编辑答案的时候
    public class LinkedList<T extends Comparable<? super T>> {
private Node top;
private int no_of_items;

private class Node {
    T data;
    Node next;
}

public LinkedList() {
    top = null;
}

public boolean isEmpty() {
    return (top == null);
}

public void insert(T item) {
    Node node = new Node();
    node.data = item;
    node.next = top;
    if(isEmpty()) {
        top = node;
    } else {
        Node n = top; 
        while(n.next != null) {
            n = n.next;
        }
        n.next = node;
    }
    no_of_items++;

}
    }