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General data-binding functionality for Jackson: works on core streaming API

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package com.fasterxml.jackson.databind.util;

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

/**
 * Implementation of {@link Iterator} for Empty collections.
 * While JDK has an implementation starting with 1.7, we need this
 * class until then.
 * 
 * @since 2.2 (before, we had embedded instances)
 */
public class EmptyIterator implements Iterator {
    private final static EmptyIterator instance = new EmptyIterator();

    @SuppressWarnings("unchecked")
    public static  Iterator instance() { return (Iterator) instance; }
    
    @Override public boolean hasNext() { return false; }
    @Override public T next() { throw new NoSuchElementException(); }
    @Override public void remove() { throw new UnsupportedOperationException(); }
}
 















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