Does Your Timezone Support Daylight Saving Time?

You may want to know if your timezone supports Daylight Saving Time programmatically. This can be easily determined with the code below:

Listing 1. Sample Code

import java.util.TimeZone;public class DaylightSavingsTime{      public static void main(String args[])   {      DaylightSavingsTime daylightSavingsTime = new DaylightSavingsTime();      daylightSavingsTime.proceed();   }      private void proceed()   {      TimeZone tz = TimeZone.getDefault();      //Uncomment the below line to use the timezone of your choice. Repalce "America/Los_Angeles" with your timezone id.      //TimeZone tz = TimeZone.getTimeZone("America/Los_Angeles");      //This returns the ID of the time zone used      System.out.println("tz.getID(): " + tz.getID());      //The display name of the ID      System.out.println("tz.getDisplayName(): " + tz.getDisplayName());      //This returns true if the time zone uses Daylight Savings Time      System.out.println("tz.getDSTSavings(): " + tz.getDSTSavings());      //This returns true if the time zone is currently using Daylight Savings Time      System.out.println("tz.useDaylightTime(): " + tz.useDaylightTime());   }}
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