yyyy'-'MM'-'dd'T'HH':'mm':'ss - What is the meaning of 'T' here?

What is the meaning of T in this datetime pattern ?

yyyy'-'MM'-'dd'T'HH':'mm':'ss 2011-06开发者_如何学Python-14T04:12:36

It just shows the start of the Time component in a standard ISO 8601 date time string. Wikipedia has a detailed page about this standard format.

In ISO 8601 (UTC) T is used to designate the Time component. See "Combined date and time representations" in http://en.wikipedia.org/wiki/ISO_8601#Combined_date_and_time_representations

Find out about UTC here: http://en.wikipedia.org/wiki/Coordinated_Universal_Time.

[T] is time designator for ISO 8601 format of <date>T<time>.

it means "Time". this has been asked and answered a lot. see http://www.w3.org/TR/NOTE-datetime.html

It's from ISO 8601 which specifies a standard timestamp format:

The character [T] shall be used as time designator to indicate the start of the representation of the time of day component in these expressions.

Without some context, that's hard to answer.

However, according to the SimpleDateFormat JavaDoc 'T' is meaningless i.e. just a string literal.

This is supported by the fact the T is visible in your output string. Perhaps it means time?