Not able to understand “YYYY-MM-DDTHH:MM:SS” date format

Question

I am trying to parse following date time string

2018-01-30T23:59:59.000

I am not able to understand which standard format it is like UTC or

Answer 1

You need to escape the literal T:

SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:SS");

See This SO Answer for more examples

Update: Your string is in the format

yyyy-MM-dd'T'HH:mm:ss.SSS

but you are trying to parse it with a completely uppercase format string.

This does not do what you want it to do and you should read the documentation on SimpleDateFormat and the format string placeholders