Removing first element in a linked list do not work

[Pojahn_M]

I have created my own linked list class for learning purpose. Everything works great except removing the first element. I cant really see why it wont work.

The Node:

	private static class Node
	{
		Object obj;
		Node nextNode;
		
		Node ()
		{
			obj = null;
			nextNode = null;
		}
		
		@SuppressWarnings("unused")
		Node (Object obj, Node nextNode)
		{
			this.obj = obj;
			this.nextNode = nextNode;
		}
		
		void storeObject (Object obj)
		{
			this.obj = obj;
		}
		
		void linkTo (Node nextNode)
		{
			this.nextNode = nextNode;
		}
		
		Node getLink ()
		{
			return nextNode;
		}
		
		Object getObject ()
		{
			return obj;
		}
	}

Linked list class:

public class LinkedList<E>
{
	private Node first;
	private Node last;
	private int elements;
	...

	public void remove (int index)
	{
		if (index == 0)//Remove the first node
		{
			first = first.getLink();
		}
		...
	}
}

Testing it:

	public static void main (String[] args)
	{
		LinkedList<StringBuilder> links = new LinkedList<StringBuilder> ();
		links.add(new StringBuilder ("yo0"));
		links.add(new StringBuilder ("yo1"));
		links.add(new StringBuilder ("yo2"));
		links.add(new StringBuilder ("yo3"));
		links.add(new StringBuilder ("yo4"));
		links.add(new StringBuilder ("yo5"));
		links.add(new StringBuilder ("yo6"));
		
		links.remove(0);

		try
		{
			for (int i = 0; i < 100; i++)
				System.out.println(links.get(i));
		}
		catch (Exception e) {}
		
	}

Result:

null
yo2
yo3
yo4
yo5
yo6

So, the first index is removed, but the second one become null. Why is that?

[Norm]

Try debugging the code by printing out the values of variables as the are changed and used. The print out should show you what the code is doing.

[eRaaaa]

No one here knows how your add and get methods looks like....

[Pojahn_M]

Norm: sorry, but I didnt quite understand where to put the debuggers.
Anyway, here is my get and add methods:

	public void add (E object)
	{
		//If there is no elements(i e it is empty), this statement will run. The constructor initiate first to null and last to an empty node.
		if (first == null)
		{
			Node node = new Node ();
			first = node;
			first.storeObject(object);
			first.linkTo(last);
		}
		else
		{
			Node node = new Node ();
			node.storeObject(object);
			last.linkTo(node);
			last = node;
		}
		elements++;
	}

	@SuppressWarnings("unchecked")
	public E get (int index)
	{
		if (index > elements - 1 || index < 0)
			throw new IndexOutOfBoundsException (index + "");
		
		if (index == 0)
			return (E) first.getObject();
		if (index == elements - 1)
			return (E) last.getObject();
		
		Node node = first;
		for (int i = 0; i <= index; i++)
			node = node.getLink();
		
		return (E) node.getObject();
	}

[Norm]

Add printlns after every line where the values of variables are changed and before where the contents of variables are used in decisions.
For example at line 2 print out the value of first.
At line 35 print the value of node.