String formattedDateTime = utcDateTime.format(formatter) Format the UTC datetime as per desired patternĭateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss") ZonedDateTime utcDateTime = localDateTimeWithZone.withZoneSameInstant(ZoneId.of("UTC")) ZonedDateTime localDateTimeWithZone = ZonedDateTime.of(localDateTime, localZoneId) ZoneId localZoneId = ZoneId.systemDefault() LocalDateTime localDateTime = LocalDateTime.now() Here’s an example that demonstrates how to convert local time to UTC format. Additionally, the ZoneOffset class enables us to calculate the offset between timezones. Java provides the ZonedDateTime class in the java.time package, which allows us to represent a date and time along with its associated timezone. So, all the different datetime zones are converted to UTC format (Universal time coordinated) and stored in the server. When processing the dates in the server, we need to have a common date format in the database else it would lead to unnecessary confusion. For India, it is IST (India standard time). For example, if I am using an application in California, United States the local timezone is Pacific time (Pacific Standard Time or Pacific daylight time). Let us first try to understand what is a local timezone. In this article, we will see the step-by-step procedure of how to convert the local time to UTC using the datetime class in Java. Converting local time to UTC is crucial when building an application which is used by users thought the world, particularly for accurate time calculations and data storage.
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