in your POJO, you can apply different date format to different fields. for ex:
With that I can have date like:
And the date field can be formated differently, like:
Fri Jan 02 00:00:00 EST 1998,09:30,104.44,104.44,104.44,104.44,67040.0
Fri Jan 02 00:00:00 EST 1998,09:31,104.31,104.44,104.31,104.31,10810.0
Fri Jan 02 00:00:00 EST 1998,09:32,104.37,104.44,104.31,104.44,13310.0
BTW, if you are using the other JBeret csvItemWriter (the one that's based on super-csv), you can configure cellProcessors batch property for formating each column.