/* Link2.java
** An instance of this utility class is an object containing a data item
** (of the reference type used in instantiating the generic type parameter)
** and links to two other objects of this class.
*/

public class Link2<T> {

   // instance variables
   // ------------------

   public T item;
   public Link2<T> prev, next;

   // constructors
   // ------------

   public Link2(T item, Link2<T> prev, Link2<T> next) {
      setItem(item);  setPrev(prev);  setNext(next);
   }

   public Link2(T item) { this(item, null, null); }

   public void setItem(T item) { this.item = item; }
   public void setPrev(Link2<T> prev) { this.prev = prev; }
   public void setNext(Link2<T> next) { this.next = next; }

}