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Java > Open Source Codes > org > jfree > data > Values2D


1 /* ===========================================================
2  * JFreeChart : a free chart library for the Java(tm) platform
3  * ===========================================================
4  *
5  * (C) Copyright 2000-2005, 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
10  * under the terms of the GNU Lesser General Public License as published by
11  * the Free Software Foundation; either version 2.1 of the License, or
12  * (at your option) any later version.
13  *
14  * This library is distributed in the hope that it will be useful, but
15  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
16  * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
17  * License for more details.
18  *
19  * You should have received a copy of the GNU Lesser General Public License
20  * along with this library; if not, write to the Free Software Foundation,
21  * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
22  *
23  * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
24  * in the United States and other countries.]
25  *
26  * -------------
27  * Values2D.java
28  * -------------
29  * (C) Copyright 2002-2005, by Object Refinery Limited.
30  *
31  * Original Author: David Gilbert (for Object Refinery Limited);
32  * Contributor(s): -;
33  *
34  * $Id: Values2D.java,v 1.3 2005/03/28 19:40:26 mungady Exp $
35  *
36  * Changes:
37  * --------
38  * 28-Oct-2002 : Version 1 (DG);
39  *
40  */
41
42 package org.jfree.data;
43
44 /**
45  * A general purpose interface that can be used to access a table of values.
46  */
47 public interface Values2D {
48
49     /**
50      * Returns the number of rows in the table.
51      *
52      * @return The row count.
53      */
54     public int getRowCount();
55
56     /**
57      * Returns the number of columns in the table.
58      *
59      * @return The column count.
60      */
61     public int getColumnCount();
62
63     /**
64      * Returns a value from the table.
65      *
66      * @param row the row index (zero-based).
67      * @param column the column index (zero-based).
68      *
69      * @return The value (possibly <code>null</code>).
70      *
71      * @throws IndexOutOfBoundsException if the <code>row</code>
72      * or <code>column</code> is out of bounds.
73      */
74     public Number JavaDoc getValue(int row, int column);
75
76 }
77
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