1. /* ===========================================================

  2.  * JFreeChart : a free chart library for the Java(tm) platform

  3.  * ===========================================================

  4.  *

  5.  * (C) Copyright 2000-2004, by Object Refinery Limited and Contributors.

  6.  *

  7.  * Project Info:  http://www.jfree.org/jfreechart/index.html

  8.  *

  9.  * This library is free software; you can redistribute it and/or modify it under the terms

  10.  * of the GNU Lesser General Public License as published by the Free Software Foundation;

  11.  * either version 2.1 of the License, or (at your option) any later version.

  12.  *

  13.  * This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;

  14.  * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

  15.  * See the GNU Lesser General Public License for more details.

  16.  *

  17.  * You should have received a copy of the GNU Lesser General Public License along with this

  18.  * library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,

  19.  * Boston, MA 02111-1307, USA.

  20.  *

  21.  * [Java is a trademark or registered trademark of Sun Microsystems, Inc. 

  22.  * in the United States and other countries.]

  23.  *

  24.  * ----------

  25.  * Value.java

  26.  * ----------

  27.  * (C) Copyright 2002-2004, by Object Refinery Limited.

  28.  *

  29.  * Original Author:  David Gilbert (for Object Refinery Limited);

  30.  * Contributor(s):   -;

  31.  *

  32.  * $Id: Value.java,v 1.1 2004/08/31 15:21:49 mungady Exp $

  33.  *

  34.  * Changes:

  35.  * --------

  36.  * 28-Oct-2002 : Version 1 (DG);

  37.  * 18-Aug-2004 : Moved from org.jfree.data --> org.jfree.data.base (DG);

  38.  *

  39.  */

  40. 

  41. package org.jfree.data;

  42. 

  43. /**

  44.  * A general purpose interface for accessing a value.

  45.  */

  46. public interface Value {

  47. 

  48.     /**

  49.      * Returns the value.

  50.      *

  51.      * @return The value (possibly <code>null</code>).

  52.      */

  53.     public Number getValue();

  54. 

  55. }