New to Java

Hi,

Could someon please let me know how i can find out the java timezoneid for Amarillo?

I've written this piece of code to get all the timezone id but it doesnt return anything for Amarillo (US)

import java.util.TimeZone; 
import java.util.Date; 

public class TimeZones { 
  public static void main(String[] a) { 
     Date today = new Date(); 
    
                 // Get all time zone ids 
                 String[] zoneIds = TimeZone.getAvailableIDs(); 
    
                // View every time zone 
        for (int i=0; i<zoneIds.length; i++) { 
                // Get time zone by time zone id 
                TimeZone tz = TimeZone.getTimeZone(zoneIds); 



System.out.println("=========================================================="); 

System.out.println("TimezoneID = " + tz.getID()); 

System.out.println("DisplayName = " + tz.getDisplayName()); 

System.out.println("DisplayName SHORT = " + tz.getDisplayName(tz.inDaylightTime(today), TimeZone.SHORT));



System.out.println("DisplayName LONG = " + tz.getDisplayName(tz.inDaylightTime(today), TimeZone.LONG));



System.out.println("Timezone = " + tz.getTimeZone(zoneIds[i])); 

System.out.println("Has Daylight saving time period = " + tz.useDaylightTime()); 

System.out.println("In Daylight savings time = " + tz.inDaylightTime(today)); 



} 



} 

} 







And also, if i use a timezone, for example Europe/London, would i have to update my program every time the clock changes in the UK (e.g. to British summer time)? 



Thanks



ps. Question also posted in another forum.