JAVA method for removing a cursor from a doubly linked list. Please help me write a working method.

This is my current method but it does not work property. when I call .cursor.getPrev().getData() in the main method, the old cursor still appears, it has not been properly dislodged from the doubly linked list.

if(cursor == null || head == null){

throw new EndOfListException("cursor is null.");

}

else if(cursor.getPrev() == null){

head = cursor.getNext();

cursor.setNext(null);

cursor.setPrev(null);

cursor = head;

}

else if(cursor.getNext() == null){

tail = cursor.getPrev();

cursor.setPrev(null);

cursor.setNext(null);

cursor = tail;

}

else {

cursor.getPrev().setNext(cursor.getNext());

cursor.getNext().setPrev(cursor.getPrev());

cursor.setData(null);

cursor.setNext(null);

cursor.setPrev(null);

}