Java/Groovy - simple date reformatting

I'm new to Java/Groovy development and I have a simple string that I would like to reformat, however I get an 'Unparseable date' error when I attempt to run the following:

import java.text.SimpleDateFormat import java.util.Date String oldDate Date date String newDate oldDate = '04-DEC-2012' date = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.S").parse(oldDate) newDate = new SimpleDateFormat("M-d-yyyy").format(date) println newDate 

I'm sure it's something simple, but the solution eludes me. Can anyone help?

4 Answers

With Groovy, you don't need the includes, and can just do:

String oldDate = '04-DEC-2012' Date date = Date.parse( 'dd-MMM-yyyy', oldDate ) String newDate = date.format( 'M-d-yyyy' ) println newDate 

To print:

12-4-2012 

Your DateFormat pattern does not match you input date String. You could use

new SimpleDateFormat("dd-MMM-yyyy") 

oldDate is not in the format of the SimpleDateFormat you are using to parse it.

Try this format: dd-MMM-yyyy - It matches what you're trying to parse.

//Groovy Script import java.util.Date import java.util.TimeZone tz = TimeZone.getTimeZone("America/Sao_Paulo") def date = new Date() def dt = date.format("yyyy-MM-dd HH:mm:ss", timezone=tz) println dt //formatado println date // formatado porém, horario do Sistema em GMT.