List


1   /**
2    * Dream
3    * Copyright (C) 2003-2004 INRIA Rhone-Alpes
4    *
5    * This library is free software; you can redistribute it and/or
6    * modify it under the terms of the GNU Lesser General Public
7    * License as published by the Free Software Foundation; either
8    * version 2 of the License, or (at your option) any later version.
9    *
10   * This library is distributed in the hope that it will be useful,
11   * but WITHOUT ANY WARRANTY; without even the implied warranty of
12   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13   * Lesser General Public License for more details.
14   *
15   * You should have received a copy of the GNU Lesser General Public
16   * License along with this library; if not, write to the Free Software
17   * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
18   *
19   * Contact: dream@objectweb.org
20   *
21   * Initial developer(s): Vivien Quema
22   * Contributor(s): 
23   */
24  
25  package org.objectweb.dream.queue;
26  
27  /**
28   * This interface defines methods that must be implemented by a list. Lists can
29   * be used to implement buffers.
30   */
31  public interface List
32  {
33    /** The commonly used name to refer to this interface. */
34    String   ITF_NAME = "list";
35  
36    /**
37     * Adds the specified element to the list.
38     * <p>
39     * 
40     * @param o element to be added to this list.
41     */
42    void add(Object   o);
43  
44    /**
45     * Removes an object from the list.
46     * 
47     * @return the removed object, or <code>null</code> if the list is empty.
48     */
49    Object   remove();
50  
51    /**
52     * Returns <code>true</code> if the list is empty.
53     * 
54     * @return <code>true</code> if the list is empty.
55     */
56    boolean isEmpty();
57  }
A to Z: JavaDoc & Examples Daily Java News & Articles Open Source Projects Open Source Codes Free Computer Books Remove Frame
Popular Tags