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LocalDateTimeで指定日の23時59分59秒を作る

Posted at

散々悩んだ結果先輩がサラっと作っていた、精進が足りない

LocalDateTime localDateTime = LocalDateTime.now();
LocalDateTime ldt = localDateTime.truncatedTo(ChronoUnit.DAYS).plusDays(1).minusSeconds(1);

ついでに、LocalDateTime型→Date型にする場合

public static final ZoneId ZONE = ZoneId.of("Asia/Tokyo");
    
ZonedDateTime zonedDateTime = ldt.atZone(ZONE);
Date date = Date.from(zonedDateTime.toInstant());

これpaizaでやるとUTC時間になるの何でだろう、now()時点ではJST時間なのに

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