001    /*
002     * JBoss, Home of Professional Open Source.
003     * Copyright 2008, Red Hat Middleware LLC, and individual contributors
004     * as indicated by the @author tags. See the copyright.txt file in the
005     * distribution for a full listing of individual contributors. 
006     *
007     * This is free software; you can redistribute it and/or modify it
008     * under the terms of the GNU Lesser General Public License as
009     * published by the Free Software Foundation; either version 2.1 of
010     * the License, or (at your option) any later version.
011     *
012     * This software is distributed in the hope that it will be useful,
013     * but WITHOUT ANY WARRANTY; without even the implied warranty of
014     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
015     * Lesser General Public License for more details.
016     *
017     * You should have received a copy of the GNU Lesser General Public
018     * License along with this software; if not, write to the Free
019     * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
020     * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
021     */
022    package org.jboss.dna.common.util;
023    
024    import java.util.Iterator;
025    import java.util.NoSuchElementException;
026    
027    /**
028     * @author jverhaeg
029     * @param <T> some type
030     */
031    public final class EmptyIterator<T> implements Iterator<T> {
032    
033        /**
034         * {@inheritDoc}
035         * 
036         * @see java.util.Iterator#hasNext()
037         */
038        public boolean hasNext() {
039            return false;
040        }
041    
042        /**
043         * {@inheritDoc}
044         * 
045         * @see java.util.Iterator#next()
046         */
047        public T next() {
048            throw new NoSuchElementException();
049        }
050    
051        /**
052         * {@inheritDoc}
053         * 
054         * @see java.util.Iterator#remove()
055         */
056        public void remove() {
057            throw new UnsupportedOperationException();
058        }
059    }