tz databaseã¨ããã®ã¯ãä¸çã®æå·®ãã¾ã¨ãããããã¼ã¿ãã¼ã¹ã§ããJava SE 8ã®Date and Time APIã§ãããã®æ å ±ã使ããã¦ãã¾ãã IANA â Time Zone Database ããã§æ¬¡ã®ãããªã³ã¼ããå®è¡ããã¨ãæ¥æ¬ã®æå·®æ å ±ãå¾ãã¾ãã ZoneId.of("Asia/Tokyo").getRules().getTransitions() .forEach(System.out::println); ããããã¨ã次ã®ãããªãã¼ã¿ã表示ããã¾ãã ããã§ã1888å¹´1æ1æ¥ã«ãæå·®ã+9:18:59ããç¾å¨ã®+9:00ã«ãªã£ãã¨ããæ å ±ããããã¨ããããã¾ãã Transition[Overlap at 1888-01-01T00:18:59+09:18:59 to +09:00] Transition[Gap at 1948-05-02T02:00
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