Can someone help me with these functions. The code is not running. Removes the element at the specified position in this list. Shifts any subsequent elements to the left.

public E remove(int index) { if (index < 0 || index >= size) { throw new IndexOutOfBoundsException(); } if (index == 0) { E value = head.value; head = head.next; size--; return value; } Node previous = (Node) get(index - 1); Node current = previous.next; previous.next = current.next; size--; return (E) current.value; }

Appends the specified element to the end of this list.

public boolean add(E e) { Node newNode = new Node(e, null, tail); if (tail == null) { head = newNode; } else { tail.next = newNode; } tail = newNode; size++; return true; } 

Removes the first occurrence of the specified element from this list, if it is present. If this list does not * contain the element, it is unchanged. Returns {@code true} if this list contained the specified element.

public boolean remove(Object o) { return false; }