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Thread: Linked list Schminked list help with Nodes Please

  1. #1
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    Default Linked list Schminked list help with Nodes Please

    In my CS class we just started working with linked lists. The book goes into PAINFUL EXCRUCIATING LONG WINDED VOLUMINOUS detail about what a linked list is (which all could be summarized in a few sentences), spits out a couple code snippets and expects me to put it together. I'm having a really difficult time with it.

    I can't even create a node. From my main I created an instance of the following, and everything is fine until I try I get to tom.next = dick.

    I'm just missing something, it keeps saying type expected. Any Linked List guidance would be greatlyu appreciated.

    import java.util.*;
     
    public class SingleLinkedList<E>
    {
     
        Node<String> tom = new Node<String>("Tom");
        Node<String> dick = new Node<String>("Dick");
        Node<String> harry = new Node<String>("Harry");
     
        tom.next = dick;       //This is throwing up
        dick.next = harry;     //and this line as well
     
     
     
        private static class Node<E>
              {
     
                  //Data Fields
                  //Reference to the data
                  private E data;
     
                  //Reference to the next node
                  private Node<E> next;
     
                  //Constructors
                  //Creates new node with a null next field
                  private Node(E dataItem)
                  {
                      data = dataItem;
                      next = null;
                  }
     
                  //Creats a new node that references another node
                  private Node(E dataItem, Node<E> nodeRef)
                  {
                      data = dataItem;
                      next = nodeRef;
                  }                
           }
    }


  2. #2
    Super Moderator Norm's Avatar
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    Default Re: Linked list Schminked list help with Nodes Please

    /This is throwing up
    What is the error message you get? Please copy and paste here the full text.

    Instead of trying to directly access a class variable, you should have a setNext method you call to make the change.

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