How to Get the Current UTC (GMT) Date and Time in Java?

How to Acquire the Current Date and Time in UTC (GMT) Using Java

When a new Date object is established in Java, it assumes the current time based on the local time zone. This can be problematic if the desired output is the current date and time in UTC (GMT).

Solution Using Java 8:

The java.time package introduced in Java 8 provides a convenient method to obtain the current date and time in UTC:

Instant instant = Instant.now(); // Capturing the current moment in UTC.
System.out.println(instant); // Output: 2023-07-21T15:01:23.123Z

The Instant class represents a moment on the timeline in UTC, with a precision of nanoseconds. The "Z" suffix in the output indicates that the time is in UTC.

Solution Using Joda-Time:

Joda-Time, a popular third-party library, also offers a straightforward solution to acquire the current UTC date and time:

DateTime now = new DateTime(DateTimeZone.UTC);
System.out.println(now); // Output: 2023-07-21T15:01:23.123Z

Here, DateTimeZone.UTC specifies UTC as the desired time zone, resulting in the current UTC date and time.

Note:

To ensure accurate time zone handling, it is recommended to always explicitly specify the time zone when working with date and time in Java. Relying on the default time zone can lead to confusion and unexpected results.

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