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尝试使用 int 参数调用泛型类的方法时出现以下错误。

The method insertAfter(T) in the type CDLList<T>.Writer is not applicable for the arguments (int)

通用类代码是

public class CDLList<T> {
public Element Head;
static int count;
public CDLList(T v)
{
    Head = new Element(v);
}
public class Element 
{
    public T data;
    public Element next;
    public Element prev;

    Element(T v)
    {
        data = v;
        prev=null;
        next=null;
        count++;
    }
    public T value() 
    {
        return data;
    }
}
public Element head() 
{
    return Head;
}
public Cursor reader(Element from) 
{
    Cursor CurrCursor=new Cursor(from);
    return CurrCursor;
}
public class Cursor 
{
    public Element current;
    Cursor(Element v)
    {
        current=v;
    }
    public Element current() 
    {
        T temp;
        temp = current.value();
        System.out.println(temp);
        return current;
    }
    public void previous() 
    {
        current = current.prev;
    }
    public void next()
    {
        current = current.next;
    }
    public Writer writer()
    {
        Writer nwriter = new Writer( current);

        return nwriter;

    }
}



public class Writer
{
    public Element current;
    Writer(Element temp)
    {
        current=temp;
    }
    public boolean delete()
    {
        Element Td1,Td2;
        Td1 = current.prev;
        Td2 = current.next;
        current=null;
        Td1.next = Td2;
        Td2.prev = Td1;
        return true;

    }
    public boolean insertBefore(T val)
    {

        Element t = new Element(val);
        Element t2 = current.prev;
        t2.next=t;
        current.prev=t;
        t.next=current;
        t.prev=t2;      
        return true;
    }
    public boolean insertAfter(T val)
    {
        Element t = new Element(val);
        Element t1 = current.next;
        t.next=t1;
        t1.prev=t;
        current.next=t;
        t.prev=current;
        return true;

    }
}

}

实现泛型类的类是

    public class CDLListTest<T> extends CDLList<T> implements Runnable {
Cursor cursor;

public CDLListTest(T v) {
    super(v);
    // TODO Auto-generated constructor stub
            Element t1= new CDLList.Element(20); 
            -----------------------
    temp.writer().insertAfter(11); -- Getting error here 

如果我将泛型类扩展到另一个子泛型类并将子泛型类扩展到包含主函数的类,它会起作用。

我在这里想念什么?它应该可以工作,因为该类是通用的,在谷歌搜索后找不到任何答案

编辑:对不起,我昨天发布这个问题时非常疲惫,我很抱歉。我已经编辑了问题以使其更清楚。

Edit2:修复它public class CDLListTest<T> extends CDLList<T>应该是public class CDLListTest<T> extends CDLList

4

1 回答 1

1

看起来您已经编写了一个名为insertAfter(T value)(您没有向我们展示过)的方法。现在,当您处理一个CDLListTest<T>- 时,您指的是它,它T可以是任何类或接口。因此,当您调用 时insertAfter,您传递的值必须是 a T。但是您传递的int是 a 而不是 a T

要么更改您的调用以insertAfter传递 a T,要么更改方法的签名insertAfter,使其参数类型为int

于 2013-10-23T02:17:07.927 回答