author | sherman |
Thu, 14 Aug 2014 15:54:04 -0700 | |
changeset 25986 | 12bcf9a5994f |
parent 24256 | da9a41004459 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. Oracle designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Oracle in the LICENSE file that accompanied this code. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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||
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/* |
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* This file is available under and governed by the GNU General Public |
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* License version 2 only, as published by the Free Software Foundation. |
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* However, the following notice accompanied the original version of this |
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* file: |
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* |
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* Copyright (c) 2007-2012, Stephen Colebourne & Michael Nascimento Santos |
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* |
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* All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions are met: |
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* |
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* * Redistributions of source code must retain the above copyright notice, |
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* this list of conditions and the following disclaimer. |
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* |
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* * Redistributions in binary form must reproduce the above copyright notice, |
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* this list of conditions and the following disclaimer in the documentation |
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* and/or other materials provided with the distribution. |
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* |
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* * Neither the name of JSR-310 nor the names of its contributors |
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* may be used to endorse or promote products derived from this software |
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* without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR |
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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*/ |
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package java.time; |
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import static java.time.temporal.ChronoField.MONTH_OF_YEAR; |
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import static java.time.temporal.ChronoUnit.MONTHS; |
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import java.time.chrono.Chronology; |
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import java.time.chrono.IsoChronology; |
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import java.time.format.DateTimeFormatterBuilder; |
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import java.time.format.TextStyle; |
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import java.time.temporal.ChronoField; |
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import java.time.temporal.Temporal; |
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import java.time.temporal.TemporalAccessor; |
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import java.time.temporal.TemporalAdjuster; |
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import java.time.temporal.TemporalField; |
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import java.time.temporal.TemporalQueries; |
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import java.time.temporal.TemporalQuery; |
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import java.time.temporal.UnsupportedTemporalTypeException; |
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import java.time.temporal.ValueRange; |
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import java.util.Locale; |
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/** |
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* A month-of-year, such as 'July'. |
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* <p> |
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* {@code Month} is an enum representing the 12 months of the year - |
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* January, February, March, April, May, June, July, August, September, October, |
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* November and December. |
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* <p> |
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* In addition to the textual enum name, each month-of-year has an {@code int} value. |
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* The {@code int} value follows normal usage and the ISO-8601 standard, |
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* from 1 (January) to 12 (December). It is recommended that applications use the enum |
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* rather than the {@code int} value to ensure code clarity. |
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* <p> |
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* <b>Do not use {@code ordinal()} to obtain the numeric representation of {@code Month}. |
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* Use {@code getValue()} instead.</b> |
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* <p> |
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* This enum represents a common concept that is found in many calendar systems. |
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* As such, this enum may be used by any calendar system that has the month-of-year |
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* concept defined exactly equivalent to the ISO-8601 calendar system. |
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* |
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* @implSpec |
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* This is an immutable and thread-safe enum. |
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* |
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* @since 1.8 |
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*/ |
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public enum Month implements TemporalAccessor, TemporalAdjuster { |
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/** |
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* The singleton instance for the month of January with 31 days. |
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* This has the numeric value of {@code 1}. |
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*/ |
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JANUARY, |
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/** |
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* The singleton instance for the month of February with 28 days, or 29 in a leap year. |
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* This has the numeric value of {@code 2}. |
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*/ |
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FEBRUARY, |
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/** |
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* The singleton instance for the month of March with 31 days. |
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* This has the numeric value of {@code 3}. |
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*/ |
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MARCH, |
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/** |
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* The singleton instance for the month of April with 30 days. |
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* This has the numeric value of {@code 4}. |
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*/ |
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APRIL, |
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/** |
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* The singleton instance for the month of May with 31 days. |
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* This has the numeric value of {@code 5}. |
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*/ |
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MAY, |
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/** |
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* The singleton instance for the month of June with 30 days. |
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* This has the numeric value of {@code 6}. |
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*/ |
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JUNE, |
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/** |
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* The singleton instance for the month of July with 31 days. |
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* This has the numeric value of {@code 7}. |
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*/ |
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JULY, |
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/** |
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* The singleton instance for the month of August with 31 days. |
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* This has the numeric value of {@code 8}. |
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*/ |
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AUGUST, |
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/** |
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* The singleton instance for the month of September with 30 days. |
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* This has the numeric value of {@code 9}. |
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*/ |
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SEPTEMBER, |
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/** |
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* The singleton instance for the month of October with 31 days. |
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* This has the numeric value of {@code 10}. |
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*/ |
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OCTOBER, |
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/** |
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* The singleton instance for the month of November with 30 days. |
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* This has the numeric value of {@code 11}. |
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*/ |
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NOVEMBER, |
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/** |
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* The singleton instance for the month of December with 31 days. |
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* This has the numeric value of {@code 12}. |
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*/ |
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DECEMBER; |
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/** |
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* Private cache of all the constants. |
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*/ |
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private static final Month[] ENUMS = Month.values(); |
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//----------------------------------------------------------------------- |
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/** |
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* Obtains an instance of {@code Month} from an {@code int} value. |
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* <p> |
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* {@code Month} is an enum representing the 12 months of the year. |
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* This factory allows the enum to be obtained from the {@code int} value. |
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* The {@code int} value follows the ISO-8601 standard, from 1 (January) to 12 (December). |
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* |
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* @param month the month-of-year to represent, from 1 (January) to 12 (December) |
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* @return the month-of-year, not null |
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* @throws DateTimeException if the month-of-year is invalid |
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*/ |
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public static Month of(int month) { |
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if (month < 1 || month > 12) { |
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throw new DateTimeException("Invalid value for MonthOfYear: " + month); |
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} |
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return ENUMS[month - 1]; |
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} |
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//----------------------------------------------------------------------- |
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/** |
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* Obtains an instance of {@code Month} from a temporal object. |
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* <p> |
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* This obtains a month based on the specified temporal. |
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* A {@code TemporalAccessor} represents an arbitrary set of date and time information, |
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* which this factory converts to an instance of {@code Month}. |
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* <p> |
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* The conversion extracts the {@link ChronoField#MONTH_OF_YEAR MONTH_OF_YEAR} field. |
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* The extraction is only permitted if the temporal object has an ISO |
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* chronology, or can be converted to a {@code LocalDate}. |
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* <p> |
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* This method matches the signature of the functional interface {@link TemporalQuery} |
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* allowing it to be used as a query via method reference, {@code Month::from}. |
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* |
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* @param temporal the temporal object to convert, not null |
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* @return the month-of-year, not null |
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* @throws DateTimeException if unable to convert to a {@code Month} |
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*/ |
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public static Month from(TemporalAccessor temporal) { |
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if (temporal instanceof Month) { |
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return (Month) temporal; |
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} |
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try { |
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if (IsoChronology.INSTANCE.equals(Chronology.from(temporal)) == false) { |
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temporal = LocalDate.from(temporal); |
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} |
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return of(temporal.get(MONTH_OF_YEAR)); |
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} catch (DateTimeException ex) { |
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throw new DateTimeException("Unable to obtain Month from TemporalAccessor: " + |
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temporal + " of type " + temporal.getClass().getName(), ex); |
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} |
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} |
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//----------------------------------------------------------------------- |
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/** |
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* Gets the month-of-year {@code int} value. |
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* <p> |
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* The values are numbered following the ISO-8601 standard, |
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* from 1 (January) to 12 (December). |
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* |
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* @return the month-of-year, from 1 (January) to 12 (December) |
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*/ |
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public int getValue() { |
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return ordinal() + 1; |
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} |
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//----------------------------------------------------------------------- |
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/** |
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* Gets the textual representation, such as 'Jan' or 'December'. |
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* <p> |
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* This returns the textual name used to identify the month-of-year, |
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* suitable for presentation to the user. |
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* The parameters control the style of the returned text and the locale. |
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* <p> |
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* If no textual mapping is found then the {@link #getValue() numeric value} is returned. |
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* |
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* @param style the length of the text required, not null |
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* @param locale the locale to use, not null |
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* @return the text value of the month-of-year, not null |
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*/ |
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public String getDisplayName(TextStyle style, Locale locale) { |
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return new DateTimeFormatterBuilder().appendText(MONTH_OF_YEAR, style).toFormatter(locale).format(this); |
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} |
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//----------------------------------------------------------------------- |
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/** |
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* Checks if the specified field is supported. |
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* <p> |
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* This checks if this month-of-year can be queried for the specified field. |
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* If false, then calling the {@link #range(TemporalField) range} and |
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* {@link #get(TemporalField) get} methods will throw an exception. |
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* <p> |
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* If the field is {@link ChronoField#MONTH_OF_YEAR MONTH_OF_YEAR} then |
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* this method returns true. |
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* All other {@code ChronoField} instances will return false. |
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* <p> |
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* If the field is not a {@code ChronoField}, then the result of this method |
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* is obtained by invoking {@code TemporalField.isSupportedBy(TemporalAccessor)} |
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* passing {@code this} as the argument. |
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* Whether the field is supported is determined by the field. |
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* |
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* @param field the field to check, null returns false |
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* @return true if the field is supported on this month-of-year, false if not |
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*/ |
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@Override |
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public boolean isSupported(TemporalField field) { |
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if (field instanceof ChronoField) { |
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return field == MONTH_OF_YEAR; |
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} |
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return field != null && field.isSupportedBy(this); |
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} |
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/** |
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* Gets the range of valid values for the specified field. |
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* <p> |
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* The range object expresses the minimum and maximum valid values for a field. |
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* This month is used to enhance the accuracy of the returned range. |
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* If it is not possible to return the range, because the field is not supported |
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* or for some other reason, an exception is thrown. |
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* <p> |
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* If the field is {@link ChronoField#MONTH_OF_YEAR MONTH_OF_YEAR} then the |
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* range of the month-of-year, from 1 to 12, will be returned. |
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* All other {@code ChronoField} instances will throw an {@code UnsupportedTemporalTypeException}. |
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* <p> |
297 |
* If the field is not a {@code ChronoField}, then the result of this method |
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* is obtained by invoking {@code TemporalField.rangeRefinedBy(TemporalAccessor)} |
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* passing {@code this} as the argument. |
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* Whether the range can be obtained is determined by the field. |
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* |
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* @param field the field to query the range for, not null |
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* @return the range of valid values for the field, not null |
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* @throws DateTimeException if the range for the field cannot be obtained |
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* @throws UnsupportedTemporalTypeException if the field is not supported |
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*/ |
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@Override |
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public ValueRange range(TemporalField field) { |
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if (field == MONTH_OF_YEAR) { |
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return field.range(); |
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} |
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return TemporalAccessor.super.range(field); |
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} |
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/** |
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* Gets the value of the specified field from this month-of-year as an {@code int}. |
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* <p> |
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* This queries this month for the value of the specified field. |
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* The returned value will always be within the valid range of values for the field. |
320 |
* If it is not possible to return the value, because the field is not supported |
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* or for some other reason, an exception is thrown. |
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* <p> |
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* If the field is {@link ChronoField#MONTH_OF_YEAR MONTH_OF_YEAR} then the |
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* value of the month-of-year, from 1 to 12, will be returned. |
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* All other {@code ChronoField} instances will throw an {@code UnsupportedTemporalTypeException}. |
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* <p> |
327 |
* If the field is not a {@code ChronoField}, then the result of this method |
|
15658 | 328 |
* is obtained by invoking {@code TemporalField.getFrom(TemporalAccessor)} |
15289 | 329 |
* passing {@code this} as the argument. Whether the value can be obtained, |
330 |
* and what the value represents, is determined by the field. |
|
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* |
|
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* @param field the field to get, not null |
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* @return the value for the field, within the valid range of values |
|
16852 | 334 |
* @throws DateTimeException if a value for the field cannot be obtained or |
335 |
* the value is outside the range of valid values for the field |
|
336 |
* @throws UnsupportedTemporalTypeException if the field is not supported or |
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* the range of values exceeds an {@code int} |
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15289 | 338 |
* @throws ArithmeticException if numeric overflow occurs |
339 |
*/ |
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340 |
@Override |
|
341 |
public int get(TemporalField field) { |
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342 |
if (field == MONTH_OF_YEAR) { |
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343 |
return getValue(); |
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344 |
} |
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345 |
return TemporalAccessor.super.get(field); |
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} |
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347 |
||
348 |
/** |
|
349 |
* Gets the value of the specified field from this month-of-year as a {@code long}. |
|
350 |
* <p> |
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changeset
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351 |
* This queries this month for the value of the specified field. |
15289 | 352 |
* If it is not possible to return the value, because the field is not supported |
353 |
* or for some other reason, an exception is thrown. |
|
354 |
* <p> |
|
355 |
* If the field is {@link ChronoField#MONTH_OF_YEAR MONTH_OF_YEAR} then the |
|
356 |
* value of the month-of-year, from 1 to 12, will be returned. |
|
16852 | 357 |
* All other {@code ChronoField} instances will throw an {@code UnsupportedTemporalTypeException}. |
15289 | 358 |
* <p> |
359 |
* If the field is not a {@code ChronoField}, then the result of this method |
|
15658 | 360 |
* is obtained by invoking {@code TemporalField.getFrom(TemporalAccessor)} |
15289 | 361 |
* passing {@code this} as the argument. Whether the value can be obtained, |
362 |
* and what the value represents, is determined by the field. |
|
363 |
* |
|
364 |
* @param field the field to get, not null |
|
365 |
* @return the value for the field |
|
366 |
* @throws DateTimeException if a value for the field cannot be obtained |
|
16852 | 367 |
* @throws UnsupportedTemporalTypeException if the field is not supported |
15289 | 368 |
* @throws ArithmeticException if numeric overflow occurs |
369 |
*/ |
|
370 |
@Override |
|
371 |
public long getLong(TemporalField field) { |
|
372 |
if (field == MONTH_OF_YEAR) { |
|
373 |
return getValue(); |
|
374 |
} else if (field instanceof ChronoField) { |
|
19030 | 375 |
throw new UnsupportedTemporalTypeException("Unsupported field: " + field); |
15289 | 376 |
} |
15658 | 377 |
return field.getFrom(this); |
15289 | 378 |
} |
379 |
||
380 |
//----------------------------------------------------------------------- |
|
381 |
/** |
|
382 |
* Returns the month-of-year that is the specified number of quarters after this one. |
|
383 |
* <p> |
|
384 |
* The calculation rolls around the end of the year from December to January. |
|
385 |
* The specified period may be negative. |
|
386 |
* <p> |
|
387 |
* This instance is immutable and unaffected by this method call. |
|
388 |
* |
|
389 |
* @param months the months to add, positive or negative |
|
390 |
* @return the resulting month, not null |
|
391 |
*/ |
|
392 |
public Month plus(long months) { |
|
393 |
int amount = (int) (months % 12); |
|
394 |
return ENUMS[(ordinal() + (amount + 12)) % 12]; |
|
395 |
} |
|
396 |
||
397 |
/** |
|
398 |
* Returns the month-of-year that is the specified number of months before this one. |
|
399 |
* <p> |
|
400 |
* The calculation rolls around the start of the year from January to December. |
|
401 |
* The specified period may be negative. |
|
402 |
* <p> |
|
403 |
* This instance is immutable and unaffected by this method call. |
|
404 |
* |
|
405 |
* @param months the months to subtract, positive or negative |
|
406 |
* @return the resulting month, not null |
|
407 |
*/ |
|
408 |
public Month minus(long months) { |
|
409 |
return plus(-(months % 12)); |
|
410 |
} |
|
411 |
||
412 |
//----------------------------------------------------------------------- |
|
413 |
/** |
|
414 |
* Gets the length of this month in days. |
|
415 |
* <p> |
|
416 |
* This takes a flag to determine whether to return the length for a leap year or not. |
|
417 |
* <p> |
|
418 |
* February has 28 days in a standard year and 29 days in a leap year. |
|
419 |
* April, June, September and November have 30 days. |
|
420 |
* All other months have 31 days. |
|
421 |
* |
|
422 |
* @param leapYear true if the length is required for a leap year |
|
423 |
* @return the length of this month in days, from 28 to 31 |
|
424 |
*/ |
|
425 |
public int length(boolean leapYear) { |
|
426 |
switch (this) { |
|
427 |
case FEBRUARY: |
|
428 |
return (leapYear ? 29 : 28); |
|
429 |
case APRIL: |
|
430 |
case JUNE: |
|
431 |
case SEPTEMBER: |
|
432 |
case NOVEMBER: |
|
433 |
return 30; |
|
434 |
default: |
|
435 |
return 31; |
|
436 |
} |
|
437 |
} |
|
438 |
||
439 |
/** |
|
440 |
* Gets the minimum length of this month in days. |
|
441 |
* <p> |
|
442 |
* February has a minimum length of 28 days. |
|
443 |
* April, June, September and November have 30 days. |
|
444 |
* All other months have 31 days. |
|
445 |
* |
|
446 |
* @return the minimum length of this month in days, from 28 to 31 |
|
447 |
*/ |
|
448 |
public int minLength() { |
|
449 |
switch (this) { |
|
450 |
case FEBRUARY: |
|
451 |
return 28; |
|
452 |
case APRIL: |
|
453 |
case JUNE: |
|
454 |
case SEPTEMBER: |
|
455 |
case NOVEMBER: |
|
456 |
return 30; |
|
457 |
default: |
|
458 |
return 31; |
|
459 |
} |
|
460 |
} |
|
461 |
||
462 |
/** |
|
463 |
* Gets the maximum length of this month in days. |
|
464 |
* <p> |
|
465 |
* February has a maximum length of 29 days. |
|
466 |
* April, June, September and November have 30 days. |
|
467 |
* All other months have 31 days. |
|
468 |
* |
|
469 |
* @return the maximum length of this month in days, from 29 to 31 |
|
470 |
*/ |
|
471 |
public int maxLength() { |
|
472 |
switch (this) { |
|
473 |
case FEBRUARY: |
|
474 |
return 29; |
|
475 |
case APRIL: |
|
476 |
case JUNE: |
|
477 |
case SEPTEMBER: |
|
478 |
case NOVEMBER: |
|
479 |
return 30; |
|
480 |
default: |
|
481 |
return 31; |
|
482 |
} |
|
483 |
} |
|
484 |
||
485 |
//----------------------------------------------------------------------- |
|
486 |
/** |
|
487 |
* Gets the day-of-year corresponding to the first day of this month. |
|
488 |
* <p> |
|
489 |
* This returns the day-of-year that this month begins on, using the leap |
|
490 |
* year flag to determine the length of February. |
|
491 |
* |
|
492 |
* @param leapYear true if the length is required for a leap year |
|
493 |
* @return the day of year corresponding to the first day of this month, from 1 to 336 |
|
494 |
*/ |
|
495 |
public int firstDayOfYear(boolean leapYear) { |
|
496 |
int leap = leapYear ? 1 : 0; |
|
497 |
switch (this) { |
|
498 |
case JANUARY: |
|
499 |
return 1; |
|
500 |
case FEBRUARY: |
|
501 |
return 32; |
|
502 |
case MARCH: |
|
503 |
return 60 + leap; |
|
504 |
case APRIL: |
|
505 |
return 91 + leap; |
|
506 |
case MAY: |
|
507 |
return 121 + leap; |
|
508 |
case JUNE: |
|
509 |
return 152 + leap; |
|
510 |
case JULY: |
|
511 |
return 182 + leap; |
|
512 |
case AUGUST: |
|
513 |
return 213 + leap; |
|
514 |
case SEPTEMBER: |
|
515 |
return 244 + leap; |
|
516 |
case OCTOBER: |
|
517 |
return 274 + leap; |
|
518 |
case NOVEMBER: |
|
519 |
return 305 + leap; |
|
520 |
case DECEMBER: |
|
521 |
default: |
|
522 |
return 335 + leap; |
|
523 |
} |
|
524 |
} |
|
525 |
||
526 |
/** |
|
527 |
* Gets the month corresponding to the first month of this quarter. |
|
528 |
* <p> |
|
529 |
* The year can be divided into four quarters. |
|
530 |
* This method returns the first month of the quarter for the base month. |
|
531 |
* January, February and March return January. |
|
532 |
* April, May and June return April. |
|
533 |
* July, August and September return July. |
|
534 |
* October, November and December return October. |
|
535 |
* |
|
536 |
* @return the first month of the quarter corresponding to this month, not null |
|
537 |
*/ |
|
538 |
public Month firstMonthOfQuarter() { |
|
539 |
return ENUMS[(ordinal() / 3) * 3]; |
|
540 |
} |
|
541 |
||
542 |
//----------------------------------------------------------------------- |
|
543 |
/** |
|
544 |
* Queries this month-of-year using the specified query. |
|
545 |
* <p> |
|
546 |
* This queries this month-of-year using the specified query strategy object. |
|
547 |
* The {@code TemporalQuery} object defines the logic to be used to |
|
548 |
* obtain the result. Read the documentation of the query to understand |
|
549 |
* what the result of this method will be. |
|
550 |
* <p> |
|
551 |
* The result of this method is obtained by invoking the |
|
552 |
* {@link TemporalQuery#queryFrom(TemporalAccessor)} method on the |
|
553 |
* specified query passing {@code this} as the argument. |
|
554 |
* |
|
555 |
* @param <R> the type of the result |
|
556 |
* @param query the query to invoke, not null |
|
557 |
* @return the query result, null may be returned (defined by the query) |
|
558 |
* @throws DateTimeException if unable to query (defined by the query) |
|
559 |
* @throws ArithmeticException if numeric overflow occurs (defined by the query) |
|
560 |
*/ |
|
561 |
@SuppressWarnings("unchecked") |
|
562 |
@Override |
|
563 |
public <R> R query(TemporalQuery<R> query) { |
|
20795 | 564 |
if (query == TemporalQueries.chronology()) { |
15658 | 565 |
return (R) IsoChronology.INSTANCE; |
20795 | 566 |
} else if (query == TemporalQueries.precision()) { |
15289 | 567 |
return (R) MONTHS; |
568 |
} |
|
569 |
return TemporalAccessor.super.query(query); |
|
570 |
} |
|
571 |
||
572 |
/** |
|
573 |
* Adjusts the specified temporal object to have this month-of-year. |
|
574 |
* <p> |
|
575 |
* This returns a temporal object of the same observable type as the input |
|
576 |
* with the month-of-year changed to be the same as this. |
|
577 |
* <p> |
|
578 |
* The adjustment is equivalent to using {@link Temporal#with(TemporalField, long)} |
|
579 |
* passing {@link ChronoField#MONTH_OF_YEAR} as the field. |
|
580 |
* If the specified temporal object does not use the ISO calendar system then |
|
581 |
* a {@code DateTimeException} is thrown. |
|
582 |
* <p> |
|
583 |
* In most cases, it is clearer to reverse the calling pattern by using |
|
584 |
* {@link Temporal#with(TemporalAdjuster)}: |
|
585 |
* <pre> |
|
586 |
* // these two lines are equivalent, but the second approach is recommended |
|
587 |
* temporal = thisMonth.adjustInto(temporal); |
|
588 |
* temporal = temporal.with(thisMonth); |
|
589 |
* </pre> |
|
590 |
* <p> |
|
591 |
* For example, given a date in May, the following are output: |
|
592 |
* <pre> |
|
593 |
* dateInMay.with(JANUARY); // four months earlier |
|
594 |
* dateInMay.with(APRIL); // one months earlier |
|
595 |
* dateInMay.with(MAY); // same date |
|
596 |
* dateInMay.with(JUNE); // one month later |
|
597 |
* dateInMay.with(DECEMBER); // seven months later |
|
598 |
* </pre> |
|
599 |
* <p> |
|
600 |
* This instance is immutable and unaffected by this method call. |
|
601 |
* |
|
602 |
* @param temporal the target object to be adjusted, not null |
|
603 |
* @return the adjusted object, not null |
|
604 |
* @throws DateTimeException if unable to make the adjustment |
|
605 |
* @throws ArithmeticException if numeric overflow occurs |
|
606 |
*/ |
|
607 |
@Override |
|
608 |
public Temporal adjustInto(Temporal temporal) { |
|
15658 | 609 |
if (Chronology.from(temporal).equals(IsoChronology.INSTANCE) == false) { |
15289 | 610 |
throw new DateTimeException("Adjustment only supported on ISO date-time"); |
611 |
} |
|
612 |
return temporal.with(MONTH_OF_YEAR, getValue()); |
|
613 |
} |
|
614 |
||
615 |
} |