プレミアムフライデーを求めるメソッドを作ろうと思ったらJava8の標準APIに既にあった - Qiita

package premium.friday; import java.time.DayOfWeek; import java.time.LocalDate; import java.time.YearMonth; import java.time.format.DateTimeFormatter; import java.time.temporal.TemporalAdjusters; public class Main { public static void main(String[] args) { int[] years = {2017, 2018, 2019}; for (int year : years) { for (int month = 1; month < 13; month++) { if (year == 2017 && month == 1) { continu

[uskey]

よい…

[teracy_junk]

Javaさいつよ

[dann]

"TemporalAdjusters.lastInMonth(DayOfWeek.FRIDAY)"

[mrkn]

やっぱじゃば