1 /*
   2  * Copyright (c) 2003, 2016, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
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   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
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  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
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  23 
  24 /*
  25  * @test
  26  * @bug 4851640
  27  * @summary Make sure not to set UNSET fields to COMPUTED after time calculation.
  28  */
  29 
  30 import java.util.GregorianCalendar;
  31 import static java.util.Calendar.*;
  32 
  33 public class Bug4851640 {
  34 
  35     public static void main(String args[]) {
  36         GregorianCalendar cal = new GregorianCalendar();
  37         cal.clear();
  38         cal.set(YEAR, 2003);
  39         long t = cal.getTime().getTime();
  40 
  41         // For the time calculation, the MONTH and DAY_OF_MONTH fields
  42         // (with the default values) have been used for determining
  43         // the date.  However, both the MONTH and DAY_OF_MONTH fields
  44         // should be kept UNSET after the time calculation.
  45         if (cal.isSet(MONTH) || cal.isSet(DAY_OF_MONTH)) {
  46             throw new RuntimeException("After getTime(): MONTH field=" + cal.isSet(MONTH)
  47                                        + ", DAY_OF_MONTH field=" + cal.isSet(DAY_OF_MONTH));
  48         }
  49 
  50         // After calling get() for any field, all field values are
  51         // recalculated and their field states are set to
  52         // COMPUTED. isSet() must return true.
  53         int y = cal.get(YEAR);
  54         if (!(cal.isSet(MONTH) && cal.isSet(DAY_OF_MONTH))) {
  55             throw new RuntimeException("After get(): MONTH field=" + cal.isSet(MONTH)
  56                                        + ", DAY_OF_MONTH field=" + cal.isSet(DAY_OF_MONTH));
  57         }
  58     }
  59 }