contains highlighted

        public boolean contains(Object arg0) {                int index = Math.abs(arg0.hashCode() % numBuckets);                if (buckets[index] == null)                        return false;                LinkedList<Object> test = buckets[index];                for (java.util.Iterator itr = test.iterator(); itr.hasNext();){                        Object a = itr.next();                        if (arg0.equals(a))                                return true;                }                return false;        }