Adding to a Circular Doubly Linked List

public void add (Object to_Add) {
    if (isEmpty ( )) {
      myHead = new DListNode (to_Add);
    } else {
      // Insert to_Add between myHead and myHead.myPrev.
      DListNode newNode = new DListNode (to_Add, myHead.myPrev, myHead);
      // Link the new node into the list.
      myHead.myPrev.myNext = newNode; // This is the circular link stuff.
      myHead.myPrev = newNode;
    }
    mySize++;
  }