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How to Parse ISO 8601 Dates with \'Z\' Literal Using SimpleDateFormat?

Susan Sarandon
Release: 2024-11-04 01:46:30
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How to Parse ISO 8601 Dates with 'Z' Literal Using SimpleDateFormat?

Parsing ISO 8601 Dates with 'Z' Literal in SimpleDateFormat

Question:

How to parse an ISO 8601 date that includes the "Z" literal, indicating UTC time, using Java's SimpleDateFormat?

Issue:

Using common date patterns like "yyyy-MM-dd'T'HH:mm:ss" or "yyyy-MM-dd'T'HH:mm:ssz" with SimpleDateFormat results in incorrect parsing. The "Z" literal, representing UTC time, is not being recognized.

Answer:

To parse ISO 8601 dates with the "Z" literal using SimpleDateFormat, you can use the following pattern:

<code class="java">yyyy-MM-dd'T'HH:mm:ssX</code>
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Explanation:

The "X" specifier in the pattern represents the UTC time zone offset in the ISO 8601 format. It can be used to parse dates with the "Z" literal, which indicates a zero offset from UTC.

Example:

<code class="java">SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ssX");
Date date = sdf.parse("2010-04-05T17:16:00Z");

System.out.println(date);
// Output: Sun Apr 05 17:16:00 UTC 2010</code>
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