1. 使用System.currentTimeMillis() System.currentTimeMillis()是最常见的获取当前时间的方式之一。它返回的是当前时间与1970年1月1日00:00:00 UTC之间的毫秒数。通过这个方法,我们可以获取到一个long类型的时间戳,精确到毫秒。 longcurrentTimeMillis=System.currentTimeMillis(); 1. 2. 使用Date类 Java的java....
this(System.currentTimeMillis()); } public Date(long date) { fastTime = date; } 1. 2. 3. 4. 5. 6. System.currentTimeMillis()是本地方法,the difference, measured in milliseconds, between the current time and midnight, January 1, 1970 UTC。 这个可能会因为操作系统的时间而不准。有些操...
通过一番调查取证,老白才发现,人家 Java 是从 1970-01-01 00:00:00.000 开始算的毫秒数,有文档为证: "getTimeInMillis() ... Returns: the current time as UTC milliseconds from the epoch." fromhttp://java.sun.com/j2se/1.5.0/docs/api/java/util/Calendar.html#getTimeInMillis() 所谓的 epoch...
It depends on what form of date / time you want: If you want the date / time as a single numeric value, thenSystem.currentTimeMillis()gives you that, expressed as the number of milliseconds after the UNIX epoch (as a Javalong). This value is a delta from a UTC time-point, and is...
Returns the current time in milliseconds. C# [Android.Runtime.Register("currentTimeMillis","()J","")]publicstaticlongCurrentTimeMillis(); Returns Int64 the difference, measured in milliseconds, between the current time and midnight, January 1, 1970 UTC. ...
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// get the current moment in time as a ZonedDateTime in UTC val now = ZonedDateTime.now(ZoneId.of("UTC")) // calculate the difference directly val timeLeft = Duration.between(now, endValidityDate) // return the messages depending on hours left ...
packagecom.mkyong.date;importjava.sql.Timestamp;importjava.time.Instant;publicclassInstantExample{publicstaticvoidmain(String[]args){Timestamp timestamp=newTimestamp(System.currentTimeMillis());System.out.println(timestamp);//return number of milliseconds since January 1, 1970, 00:00:00 GMTSystem....
对于日志记录,您应该使用 UTC。在 Java 中,这将是Instant类,根据定义始终采用 UTC。只需致电Instant.now()。 序列化为文本(例如日志记录)时,请始终使用标准ISO 8601格式。java.time类在解析/生成字符串时默认使用这些标准格式。您在本答案中看到了上面的示例。
OffsetDateTime(在 ISO-8601 日历系统中,有 UTC/GMT 偏移的日期时间) OffsetTime(在 ISO-8601 日历系统中与 UTC/GMT 有偏移的时间) 为了通过预定义的格式化程序将String转换为LocalDate,它应该遵循DateTimeFormatter.ISO_LOCAL_DATE模式,例如2020-06-01。LocalDate提供了一种parse()方法,可以如下使用: ...