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Library providing immutable/persistent collection classes for Java. While collections are immutable they provide methods for adding and removing values by creating new modified copies of themselves. Each copy shares almost all of its structure with other copies to minimize memory consumption.

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// Burton Computer Corporation
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package org.javimmutable.collections.iterators;

import org.javimmutable.collections.SplitableIterator;

import javax.annotation.Nonnull;
import java.util.NoSuchElementException;
import java.util.Spliterator;
import java.util.Spliterators;

public class EmptyIterator
    implements SplitableIterator
{
    private static final SplitableIterator INSTANCE = new EmptyIterator();

    @SuppressWarnings("unchecked")
    public static  SplitableIterator of()
    {
        return INSTANCE;
    }

    @Override
    public boolean hasNext()
    {
        return false;
    }

    @Override
    public T next()
    {
        throw new NoSuchElementException();
    }

    @Nonnull
    @Override
    public Spliterator spliterator(int characteristics)
    {
        return Spliterators.emptySpliterator();
    }
}