1 /*
   2  * Copyright (c) 2005, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package com.sun.xml.internal.stream.util;
  27 /**
  28  *
  29  * @author K.Venugopal ,Neeraj Bajaj Sun Microsystems.
  30  */
  31 
  32 import java.util.Iterator;
  33 
  34 public class ReadOnlyIterator implements Iterator {
  35 
  36     Iterator iterator = null;
  37 
  38     public ReadOnlyIterator(){
  39     }
  40 
  41     public ReadOnlyIterator(Iterator itr){
  42         iterator = itr;
  43     }
  44 
  45     /**
  46      * @return
  47      */
  48     public boolean hasNext() {
  49         if(iterator  != null)
  50             return iterator.hasNext();
  51         return false;
  52     }
  53 
  54     /**
  55      * @return
  56      */
  57     public Object next() {
  58         if(iterator  != null)
  59             return iterator.next();
  60         return null;
  61     }
  62 
  63     public void remove() {
  64         throw new  UnsupportedOperationException("Remove operation is not supported");
  65     }
  66 
  67 }