I'm trying to make a linkedList class that implements a deque. I'm really lost on how to do it. this is what i have.

import java.util.*;
public class LinkedListDeque implements Deque {

public LinkedListDeque() {
LinkedList list = new LinkedList();
}

public int size() { return list.size(); }

public boolean isEmpty() { return list.size() == 0; }

public void insertFirst(E e) { list.addFirst(e); }

public void insertLast(E e) { list.addLast(e); }

public E removeFirst() { return list.removeFirst(); }

public E removeLast() { return list.removeLast(); }

public E firstElement() { return list.getFirst(); }

public E lastElement() { return list.getLast(); }

}

Can someone hep me format this properly? I can't figure it out / not sure if it is even remotely correct. I'm trying to