public class CircularLinkedList
{
    public CircularLinkedList ()
    {

    }

    private Node _head = null;
    private Node _tail = null;
}
@@ -66,16 +66,246 @@
 )%0A    %7B%0A
+    %7D%0A%0A    public void add (int value)%0A    %7B%0A        Node n = new Node(value);%0A        %0A        if (_head == null)%0A            _head = n;%0A        else%0A            _tail.setNext(n);%0A%0A        _tail = n;%0A        _tail.setNext(_head);
 %0A    %7D%0A%0A

Update CircularLinkedList.java