converting a UTC time to a local time zone in Java

Question

I know this subject has been beaten to death but after searching for a few hours to this problem I had to ask.

My Problem: do calculations on dates on a server based

Answer 1

You timezone string is formulated incorrectly. Try this,

String sign = secondsFromGMT > 0 ? "+" : "-";
secondsFromGMT = Math.abs(secondsFromGMT);      
int hours = secondsFromGMT/3600;
int mins = (secondsFromGMT%3600)/60;
String zone = String.format("GMT%s%02d:%02d", sign, hours, mins);          
TimeZone t = TimeZone.getTimeZone(zone);