Why Does SimpleDateFormat Fail to Parse \'YYYY-MM-dd HH:mm\' Despite `setLenient(false)`?

SimpleDateFormat Incorrect Date Parsing of "YYYY-MM-dd HH:mm"

Q:

Using SimpleDateFormat, an attempt to parse a string in the format "YYYY-MM-dd HH:mm" to a Date is yielding an incorrect date. Despite setting setLenient(false), the result is still inaccurate. What is the cause of this discrepancy?

A:

The issue lies in the format string used: "YYYY-MM-dd HH:mm". The correct format string for parsing a string in the given format should be "yyyy-MM-dd HH:mm", where "yyyy" denotes the year with four digits.

The documentation for SimpleDateFormat specifies that "the date portion must be in one of the JDK predefined formats, the time portion must be in one of the predefined time formats, and the separator between the date and time can only be one of the predefined separators." Refer to the SimpleDateFormat documentation for further details.

<code class="java">SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm", Locale.ENGLISH);</code>

By modifying the format string to "yyyy-MM-dd HH:mm", the parsing should produce the correct date and time.

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