Unnamed

    public boolean add(E element) {        if (element == null)            throw new NullPointerException();        if (head == null) {            head = new Entry(element, null);            return true;        }        Entry prev = null;        Entry curr = head;        while(curr != null && curr.element.compareTo(element) < 0) {            prev = curr;            curr = curr.next;        }        if (prev != null) {            prev.next = new Entry(element, curr);        } else {            head = new Entry(element, curr);        }        return true;    }