Question

How to get the pattern of the given date object

I am getting one Date object as a parameter in my method and I want to know the pattern of the date to convert it into user selected timezone.

Answer 1

You’ve misunderstood what a Date means. It’s just a number of milliseconds since the Unix epoch. It has no concept of time zone, calendar or text format. If it helps, think of it as being a bit like int – an int isn’t in hex, decimal or binary – it’s just a number within a certain range. If you parse “1a” as hex, that gives an indistinguishable result from parsing “26” as decimal. The same goes for Date.

Of course, this was already explained in comments to some extent, but your reply of:

ok, but while i getting the date object which already set a format i want to know that format.

… suggests you didn’t really understood it. The concept of “which already set a format” makes no sense in the context of a Date.

If you need a particular format to be applied, you should pass the DateFormat along as well as the Date.