public class List
{
	public Node head;
	protected Node ptr;

	public List()
	{
		head = null;
		ptr = head;
	}

	public List addNext(String data)
	{
		Node newn = new Node(data);
		ptr.next = newn;
		ptr = newn;

		return this;
	}

	public List addList(List list)
	{
		ptr.next = list.head;
		ptr = list.ptr;

		return this;
	}
}