//
//	defining the doubly-linked list node
//

public class DListNode
{
	private String data;
	private DListNode next;
	private DListNode back;
	public DListNode()
	{	data= null;
		next = null;
		back = null;
	}
	public DListNode(String d, DListNode n, DListNode b)
	{	data = d;
		next = n;
		back = b;
	}
	public void setData(String d)
	{	data = d;	}
	public void setNext(DListNode n)
	{	next = n;	}
	public void setBack(DListNode b)
	{	back = b;	}
	public String getData()
	{	return data;	}
	public DListNode getNext()
	{	return next;	}
	public DListNode getBack()
	{	return back;	}
}