Dear Neeraj,
can we please discuss one issue at a time?
I know from a customer project that date format is handled perfectly fine in this Add-On:
https://vaadin.com/directory#!addon/gridutil
In the code you provide there is no DateRenderer in effect, so can you please provide an exact step-by-step walkthrough to reproduce the problem?
Together with an expected-vs-witnessed problem description?
This would help a lot. Thanks in advance!
Best Regards,
–Enver