IteratorWithCurrent.java

import java.util.Iterator;
import java.util.NoSuchElementException;

public class IteratorWithCurrent<E> implements Iterator<E>
{
	private final Iterator<E> it;
	private E current;

	public IteratorWithCurrent(Iterable<E> iterable) {
		it = iterable.iterator();
	}

	public E current() {
		if (current == null) {
			throw new NoSuchElementException();
		}

		return current;
	}

	@Override
	public boolean hasNext() {
		return it.hasNext();
	}

	@Override
	public E next() {
		current = it.next();
		return current;
	}

	@Override
	public void remove() {
		it.remove();
	}
}