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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 1997-2010 Oracle and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 *
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 * file and include the License file at packager/legal/LICENSE.txt.
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 * GPL Classpath Exception:
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 * exception as provided by Oracle in the GPL Version 2 section of the License
 * file that accompanied this code.
 *
 * Modifications:
 * If applicable, add the following below the License Header, with the fields
 * enclosed by brackets [] replaced by your own identifying information:
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/*
 * $Id: ReadOnlyIterator.java,v 1.3 2010-11-01 04:40:44 joehw Exp $
 * %W% %E%
 */
package com.sun.xml.internal.stream.util;
/**
 *
 * @author K.Venugopal ,Neeraj Bajaj Sun Microsystems.
 */

import java.util.Iterator;

public class ReadOnlyIterator implements Iterator {
    
    Iterator iterator = null;
    
    public ReadOnlyIterator(){
    }
    
    public ReadOnlyIterator(Iterator itr){
        iterator = itr;
    }
    
    /**
     * @return
     */
    public boolean hasNext() {
        if(iterator  != null)
            return iterator.hasNext();
        return false;
    }
    
    /**
     * @return
     */
    public Object next() {
        if(iterator  != null)
            return iterator.next();
        return null;
    }
    
    public void remove() {
        throw new  UnsupportedOperationException("Remove operation is not supported");
    }
    
}