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 }