EmptyIterator is an iterator which is empty.

     
/**********************************************************************************
 * $URL: https://source.sakaiproject.org/svn/util/branches/sakai_2-5-4/util-util/util/src/java/org/sakaiproject/util/EmptyIterator.java $
 * $Id: EmptyIterator.java 6832 2006-03-21 20:43:34Z ggolden@umich.edu $
 ***********************************************************************************
 *
 * Copyright (c) 2003, 2004, 2005, 2006 The Sakai Foundation.
 * 
 * Licensed under the Educational Community License, Version 1.0 (the "License"); 
 * you may not use this file except in compliance with the License. 
 * You may obtain a copy of the License at
 * 
 *      http://www.opensource.org/licenses/ecl1.php
 * 
 * Unless required by applicable law or agreed to in writing, software 
 * distributed under the License is distributed on an "AS IS" BASIS, 
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
 * See the License for the specific language governing permissions and 
 * limitations under the License.
 *
 **********************************************************************************/


// imports
import java.util.Iterator;

/**
 * <p>
 * EmptyIterator is an iterator which is empty.
 * </p>
 */
public class EmptyIterator implements Iterator
{
  public Object next()
  {
    return null;
  }

  public boolean hasNext()
  {
    return false;
  }

  public void remove()
  {
    throw new UnsupportedOperationException();
  }
}

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EmptyIterator is an iterator which is empty. : Iterator « Collections Data Structure « Java

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