001    /*
002     * JBoss DNA (http://www.jboss.org/dna)
003     * See the COPYRIGHT.txt file distributed with this work for information
004     * regarding copyright ownership.  Some portions may be licensed
005     * to Red Hat, Inc. under one or more contributor license agreements.
006     * See the AUTHORS.txt file in the distribution for a full listing of 
007     * individual contributors. 
008     *
009     * JBoss DNA is free software. Unless otherwise indicated, all code in JBoss DNA
010     * is licensed to you under the terms of the GNU Lesser General Public License as
011     * published by the Free Software Foundation; either version 2.1 of
012     * the License, or (at your option) any later version.
013     *
014     * JBoss DNA is distributed in the hope that it will be useful,
015     * but WITHOUT ANY WARRANTY; without even the implied warranty of
016     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
017     * Lesser General Public License for more details.
018     *
019     * You should have received a copy of the GNU Lesser General Public
020     * License along with this software; if not, write to the Free
021     * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
022     * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
023     */
024    package org.jboss.dna.common.collection;
025    
026    import java.util.Iterator;
027    import java.util.NoSuchElementException;
028    
029    /**
030     * @author jverhaeg
031     * @param <T> some type
032     */
033    public final class EmptyIterator<T> implements Iterator<T> {
034    
035        /**
036         * {@inheritDoc}
037         * 
038         * @see java.util.Iterator#hasNext()
039         */
040        public boolean hasNext() {
041            return false;
042        }
043    
044        /**
045         * {@inheritDoc}
046         * 
047         * @see java.util.Iterator#next()
048         */
049        public T next() {
050            throw new NoSuchElementException();
051        }
052    
053        /**
054         * {@inheritDoc}
055         * 
056         * @see java.util.Iterator#remove()
057         */
058        public void remove() {
059            throw new UnsupportedOperationException();
060        }
061    }