import java.util.Arrays;
import java.util.TimeZone;
public class MyClass {
public static void main(String args[]) {
String[] ids = TimeZone.getAvailableIDs();
System.out.println(Arrays.toString(ids));
}
}
/*
run:
[Africa/Abidjan, Africa/Accra, Africa/Addis_Ababa, Africa/Algiers, Africa/Asmara, Africa/Asmera, Africa/Bamako, Africa/Bangui, Africa/Banjul, Africa/Bissau, Africa/Blantyre, Africa/Brazzavill...
*/