Wed, 07 Oct 2015 10:01:40 -0700
Merge
1 # compute Mothers day of the given the year
3 /*
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34 // print "Mother's day" of the given year using Java Time API
36 if (arguments.length == 0) {
37 print("Usage: jjs mothers_day.js -- year");
38 exit(1);
39 }
41 // java classes used
42 var DayOfWeek = java.time.DayOfWeek;
43 var LocalDate = java.time.LocalDate;
44 var TemporalAdjusters = java.time.temporal.TemporalAdjusters;
46 var year = parseInt(arguments[0]);
48 // See: https://en.wikipedia.org/?title=Mother%27s_Day
49 // We need second Sunday of May. Make April 30 of the given
50 // year adjust and adjust to next Sunday from there twice. To adjust a Date
51 // we use a common TemporalAdjuster provided in JDK8.
52 // https://docs.oracle.com/javase/8/docs/api/java/time/temporal/TemporalAdjusters.html
54 print(LocalDate.of(year, 4, 30).
55 with(TemporalAdjusters.next(DayOfWeek.SUNDAY)).
56 with(TemporalAdjusters.next(DayOfWeek.SUNDAY)));