Class HashEnumIterator

lib/java/util/Hashtable.java:637–713

    }

    class HashEnumIterator<E> extends HashIterator<E> implements Enumeration<E> {

        private boolean isEnumeration = false;

        int start;

        Entry<K, V> entry;

        HashEnumIterator(MapEntry.Type<E, K, V> value) {
            super(value);
        }

        HashEnumIterator(MapEntry.Type<E, K, V> value, boolean isEnumeration) {
            super(value);
            this.isEnumeration = isEnumeration;
            start = lastSlot + 1;
        }

        public boolean hasMoreElements() {
            if (isEnumeration) {
                if (entry != null) {
                    return true;
                }
                while (start > firstSlot) {
                    if (elementData[--start] != null) {
                        entry = elementData[start];
                        return true;
                    }
                }
                return false;
            }
            // iterator
            return super.hasNext();
        }

        public boolean hasNext() {
            if (isEnumeration) {
                return hasMoreElements();
            }
            // iterator
            return super.hasNext();
        }

        public E next() {
            if (isEnumeration) {
                if (expectedModCount == modCount) {
                    return nextElement();
                } else {
                    throw new ConcurrentModificationException();
                }
            }
            // iterator
            return super.next();
        }

        @SuppressWarnings("unchecked")
        public E nextElement() {
            if (isEnumeration) {