static public GetTime GetInstance()
 {
     if (_instance == null)
     {
         lock (key)
         {
             if (_instance == null)
             {
                 _instance = new GetTime();
             }
         }
     }
     return(_instance);
 }
        static void Main(string[] args)
        {
            GetTime g1 = GetTime.GetInstance();
            GetTime g2 = GetTime.GetInstance();

            if (g1 == g2)
            {
                Console.WriteLine("Same");
            }
            else
            {
                Console.WriteLine("Not Same");
            }

            g1.PrintTime();
        }