// Textbook fragment 05.06
public class Node<E> {
  // Instance variables:
  private E element;
  private Node<E> next;
  /** Creates a node with null references to its element and next node. */
  public Node() {
    this(null, null);
  }
  /** Creates a node with the given element and next node. */
  public Node(E e, Node<E> n) {
    element = e;
    next = n;
  }
  // Accessor methods:
  public E getElement() {
    return element;
  }
  public Node<E> getNext() {
    return next;
  }
  // Modifier methods:
  public void setElement(E newElem) {
    element = newElem;
  }
  public void setNext(Node<E> newNext) {
    next = newNext;
  }
}