public class DoubleNode<E>{
    private E item;
    private DoubleNode<E> prev;
    private DoubleNode<E> next;

    public DoubleNode(E newItem){
	item = newItem;
	prev = null;
	next = null;
    }

    public DoubleNode 
	(E newItem, DoubleNode<E> prevNode, DoubleNode<E> nextNode){
	item = newItem;
	prev = prevNode;
	next = nextNode;
    }

    public void setItem(E newItem){
	item = newItem;
    }

    public E getItem(){
	return item;
    }

    public void setPrev (DoubleNode<E> prevNode){
	prev = prevNode;
    }

    public DoubleNode<E> getPrev (){
	return prev;
    }

    public void setNext (DoubleNode<E> nextNode){
	next = nextNode;
    }

    public DoubleNode<E> getNext (){
	return next;
    }
}