Determine Whether Daylight Savings Time (DST) is Active in Java for a Specified Date

Question

I have a Java class that takes in the latitude/longitude of a location and returns the GMT offset when daylight savings time is on and off. I am looking for an easy way to

Answer 1

TimeZone tz = TimeZone.getTimeZone("EST");
boolean inDs = tz.inDaylightTime(new Date());