(Solved) : Interface Linkeddeque Completed Program Interface Cannot Use Methods Given Program Textboo Q32478054 . . . .

Below is an interface of a LinkedDeque, below that is acompleted program for the interface. With that, I cannot use thesame methods as that of the given program (it is from a textbook);I need a different approach to this LinkedDeque. Thank you!

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public interface DequeInterface<T>{ /** Adds a new entry to the front/back of this dequeue. @param newEntry An object to be added. */ public void addToFront(T newEntry); public void addToBack(T newEntry); /** Removes and returns the front/back entry of this dequeue. @return The object at the front/back of the