Meeting Time - TimeZone

[ld14088]

Hi:
I am working on a program that given a specific time in one city, calculate the corresponding time in another city. Here is what I have so far:

String tz=TimeZone.getTimeZone("America/New_York").getDisplayName();
java.text.SimpleDateFormat sdf=new java.text.SimpleDateFormat("yyyy-MM-dd HH:mm z");
Date d=sdf.parse("2005-02-10 13:00 "+tz);
sdf.setTimeZone(TimeZone.getTimeZone("Europe/Paris"));
System.out.println("Time in Paris: "+sdf.format(d));

If I pass the start time zone and time for New York, I want to calculate the corresponding time for Paris. So, for 12:00pm NY, I would get 6pm in Paris in the winter time, but I should also get 6pm in the Summer time since both time zones adjust +1 hour. But, my code will display 7pm for Paris in June. Can someone provide help or suggestion to get the Daylight Saving Time correct? Thanks.

 

[sedj]

This should show you how to do what you wish :

		TimeZone tzNY = TimeZone.getTimeZone("America/New_York");
		TimeZone tzParis = TimeZone.getTimeZone("Europe/Paris");

		// Get the current time in this time zone
		long now = System.currentTimeMillis();

		// Get the two dates, given the time "now" plus the offsets for the
		// desired time zones
		java.util.Date dateNY = new java.util.Date(now +tzNY.getOffset(now));
		java.util.Date dateParis = new java.util.Date(now +tzParis.getOffset(now));

		System.out.println("Date in NY = " +dateNY);
		System.out.println("Date in Paris = " +dateParis);

You'll have to alter this so you can pass in your own date ...

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[sedj]

Oh, daylight saving is handled automatically by the TimeZone object when you get the offsets ...

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http://www.primrose.org.uk