双循环链接列表GetData方法

Question

anyone can help me? y cannot get data result = temp.data below is my statement

public T getEntry(int givenPosition) {
    T result = null;
    if(root ==null)
        return null;
    else{
         DNode temp = root;

         for(int i=0;i<givenPosition;i++){
             //if(temp !=root.nextNode){
                 temp = temp.nextDNode;
                 //lala = temp.data;
             // }
         }
         result = temp.data;
    }
    return result;
}

public class DNode <T> {

    T data;
    DNode nextDNode;
    DNode previousDNode;

    DNode(T data){

        this.data = data;
        numberOfEntries++;

    }
}

Answer 1

尝试使用T进行make temp ，即DNode<T> temp = root;