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A lightweight alternative to Java 8 sequential Stream

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package org.d2ab.iterator;

import java.util.Iterator;

public class ImmutableIterator extends DelegatingUnaryIterator {
	public ImmutableIterator(Iterator iterator) {
		super(iterator);
	}

	@Override
	public T next() {
		return iterator.next();
	}

	@Override
	public void remove() {
		throw new UnsupportedOperationException();
	}
}