/*
 * FindBugs - Find Bugs in Java programs
 * Copyright (C) 2006, University of Maryland
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

package edu.umd.cs.findbugs.util;

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

/**
 * An Iterator that returns no elements.
 * 
 * @author David Hovemeyer
 */
public class NullIterator<E> implements Iterator<E> {

    /*
     * (non-Javadoc)
     * 
     * @see java.util.Iterator#hasNext()
     */
    public boolean hasNext() {
        return false;
    }

    /*
     * (non-Javadoc)
     * 
     * @see java.util.Iterator#next()
     */
    public E next() {
        throw new NoSuchElementException();
    }

    /*
     * (non-Javadoc)
     * 
     * @see java.util.Iterator#remove()
     */
    public void remove() {
        throw new UnsupportedOperationException();
    }

}