Parsing string into date, Groovy

Question

I have a date string stored in DB, as shown below

20180502160645

I want to parse it in this format:

yyyy-MM-dd'T'HH:mm:ssZ

Tried:

SimpleDateFormat dateParser = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ssZ");
Date date = dateParser.parse(dateString);
def parsedDate = dateParser.format(date);

And this:

Date dateTest = Date.parse("yyyy-MM-dd'T'HH:mm:ssZ",dateString );

Both failed to parse it.

Answer 1

Using the following format (below) will match the input:

import java.text.SimpleDateFormat

def dateString = '20180502160645'

SimpleDateFormat dateParser = new SimpleDateFormat("yyyyMMddHHmmss");
Date date = dateParser.parse(dateString);
def parsedDate = dateParser.format(date);
assert dateString == parsedDate