Remove from List<> index

 public void remove(String author) {
        int size = this.gladiators.size();
        int index = -1;
        for (int i = 0; i < size; i++) {
            if (this.gladiators.get(i).getName().equals(author)) {
                index = i;
                gladiators.remove(gladiators.get(index));
                this.count--;
                break;
            }
        }
    }