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  *

     5  * This code is free software; you can redistribute it and/or modify it

     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

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    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

    21  * questions.

    22  */

    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 }