samples/mothers_day.js

Tue, 22 Mar 2016 21:31:52 -0700

author
asaha
date
Tue, 22 Mar 2016 21:31:52 -0700
changeset 1810
d0fba38a0705
parent 1524
3f4320a01539
permissions
-rw-r--r--

Added tag jdk8u92-b13 for changeset e2294411edbd

sundar@1524 1 # compute Mothers day of the given the year
sundar@1524 2
sundar@1524 3 /*
sundar@1524 4 * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
sundar@1524 5 *
sundar@1524 6 * Redistribution and use in source and binary forms, with or without
sundar@1524 7 * modification, are permitted provided that the following conditions
sundar@1524 8 * are met:
sundar@1524 9 *
sundar@1524 10 * - Redistributions of source code must retain the above copyright
sundar@1524 11 * notice, this list of conditions and the following disclaimer.
sundar@1524 12 *
sundar@1524 13 * - Redistributions in binary form must reproduce the above copyright
sundar@1524 14 * notice, this list of conditions and the following disclaimer in the
sundar@1524 15 * documentation and/or other materials provided with the distribution.
sundar@1524 16 *
sundar@1524 17 * - Neither the name of Oracle nor the names of its
sundar@1524 18 * contributors may be used to endorse or promote products derived
sundar@1524 19 * from this software without specific prior written permission.
sundar@1524 20 *
sundar@1524 21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
sundar@1524 22 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
sundar@1524 23 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
sundar@1524 24 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
sundar@1524 25 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
sundar@1524 26 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
sundar@1524 27 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
sundar@1524 28 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
sundar@1524 29 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
sundar@1524 30 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
sundar@1524 31 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
sundar@1524 32 */
sundar@1524 33
sundar@1524 34 // print "Mother's day" of the given year using Java Time API
sundar@1524 35
sundar@1524 36 if (arguments.length == 0) {
sundar@1524 37 print("Usage: jjs mothers_day.js -- year");
sundar@1524 38 exit(1);
sundar@1524 39 }
sundar@1524 40
sundar@1524 41 // java classes used
sundar@1524 42 var DayOfWeek = java.time.DayOfWeek;
sundar@1524 43 var LocalDate = java.time.LocalDate;
sundar@1524 44 var TemporalAdjusters = java.time.temporal.TemporalAdjusters;
sundar@1524 45
sundar@1524 46 var year = parseInt(arguments[0]);
sundar@1524 47
sundar@1524 48 // See: https://en.wikipedia.org/?title=Mother%27s_Day
sundar@1524 49 // We need second Sunday of May. Make April 30 of the given
sundar@1524 50 // year adjust and adjust to next Sunday from there twice. To adjust a Date
sundar@1524 51 // we use a common TemporalAdjuster provided in JDK8.
sundar@1524 52 // https://docs.oracle.com/javase/8/docs/api/java/time/temporal/TemporalAdjusters.html
sundar@1524 53
sundar@1524 54 print(LocalDate.of(year, 4, 30).
sundar@1524 55 with(TemporalAdjusters.next(DayOfWeek.SUNDAY)).
sundar@1524 56 with(TemporalAdjusters.next(DayOfWeek.SUNDAY)));

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