import  java.util.Date;
 import  java.util.Locale;
 import  java.util.TimeZone;
 import  java.text.SimpleDateFormat;

 public   class  Tzinfo {

   public   static   void  main(String[] arg) {
    System.out.println();
     if  (arg.length== 1  && 
      ("-h".equals(arg[ 0 ].toLowerCase()) || "/?".equals(arg[ 0 ].toLowerCase()))
    ) {
      System.out.println("*** Usage ***");
      System.out.println("Listing all available locales: java Tzinfo list");
      System.out.println("Get info on default locale   : java Tzinfo");
      System.out.println("Get info on specific locale  : java Tzinfo Europe/Moscow");
    }
     else   if  (arg.length== 1  && "list".equals(arg[ 0 ].toLowerCase())) {
      System.out.println("*** List of available IDs ***");
      String ids[] = TimeZone.getAvailableIDs();
       for  ( int  i= 0 ; i<ids.length; i++)
        System.out.println(ids[i]);
    }  else  {
      TimeZone tz = arg.length== 1  ? TimeZone.getTimeZone(arg[ 0 ]) : TimeZone.getDefault();
      System.out.println("ID               : " + tz.getID());
      System.out.println("DisplayName      : " + tz.getDisplayName(Locale.US));
      System.out.println("DisplayNameLong  : " + tz.getDisplayName(true, TimeZone. LONG , Locale.US));
      System.out.println("Uses DaylightTime: " + tz.useDaylightTime());
      System.out.println("DSTSavings (mins): " + tz.getDSTSavings()/( 1000 * 60 ));
      System.out.println("Offset (mins)    : " + tz.getRawOffset()/( 1000 * 60 ));
      SimpleDateFormat df =  new  SimpleDateFormat("dd.MM.yyyy HH:mm:ss");
      df.setTimeZone(tz);
      System.out.println("Local time       : " + df.format( new  Date()));
    }
    System.out.println();
  }

}