ReadOnlyIterator.java

/*
 * Copyright 2005 Sun Microsystems, Inc.  All Rights Reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Sun designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Sun in the LICENSE file that accompanied this code.
 *
 * This code 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 General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
 * CA 95054 USA or visit www.sun.com if you need additional information or
 * have any questions.
 */

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");
    }

}