DateFormat


1   /*********************************************************************
2   *
3   *      Copyright (C) 2002 Andrew Khan
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 2.1 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  
20  package jxl.write;
21  
22  import java.text.SimpleDateFormat  ;
23  
24  import jxl.biff.DisplayFormat;
25  import jxl.write.biff.DateFormatRecord;
26  
27  /**
28   * A custom user defined number format which may be instantiated within user
29   * applications in order to present date and time values in the  appropriate
30   * format.
31   * The string format used to create a DateFormat adheres to the standard
32   * java specification, and JExcelApi makes the necessary modifications so
33   * that it is rendered as its nearest equivalent in Excel.
34   * Once created, this may be used within a CellFormat object, which in turn
35   * is a parameter passed to the constructor of the DateTime cell
36   */
37  public class DateFormat extends DateFormatRecord implements DisplayFormat
38  {
39    /**
40     * Constructor. The date format that is passed should comply to the standard
41     * Java date formatting conventions
42     *
43     * @param format the date format
44     */
45    public DateFormat(String   format)
46    {
47      super(format);
48  
49      // Verify that the format is valid
50      SimpleDateFormat   df = new SimpleDateFormat  (format);
51    }
52  }
53
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