Source Code : Array Iterator

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Array Iterator

    

/**
    GNU LESSER GENERAL PUBLIC LICENSE
    Copyright (C) 2006 The Lobo Project

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
    License as published by the Free Software Foundation; either
    version 2.1 of the License, or (at your option) any later version.

    This library 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
    Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public
    License along with this library; if not, write to the Free Software
    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

    Contact info: lobochief@users.sourceforge.net
*/
/*
 * Created on Apr 17, 2005
 */

import java.util.*;

/**
 * @author J. H. S.
 */
public class ArrayUtilities {

  /**
   * 
   */
  private ArrayUtilities() {
    super();
  }

  public static Iterator iterator(Object[] array, int offset, int length) {
    return new ArrayIterator(array, offset, length);
  }
  
  private static class ArrayIterator implements Iterator {
    private final Object[] array;
    private final int top;
    private int offset;
    
    public ArrayIterator(Object[] array, int offset, int length) {
      this.array = array;
      this.offset = offset;
      this.top = offset + length;
    }
    
    /* (non-Javadoc)
     * @see java.util.Iterator#hasNext()
     */
    public boolean hasNext() {
      return this.offset < this.top;
    }
    
    /* (non-Javadoc)
     * @see java.util.Iterator#next()
     */
    public Object next() {
      return this.array[this.offset++];
    }
    
    /* (non-Javadoc)
     * @see java.util.Iterator#remove()
     */
    public void remove() {
      throw new UnsupportedOperationException();
    }
  }
}

   
    
    
    
  

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