1. Create a DLLNode (Doubly Linked List) class which will be used to store the content of each individual packet. The interface of this class is given below: 2. Create DLL class which will be used to store the content of an entire file (ie . message) – one line/packet per node. The outline of this class is given below. 3. Create TextConstructor class which will act as the driver to test the solution.