public void touch(int i)
   {
       switch(i)
       {
           case 1:
            gc.goDairy();
            break;
           case 2:
            gc.goVeg();
            break;
           case 3:
            gc.goBakery();
            break;
           case 4:
            gc.goWine();
            break;
            default:
                System.out.println("No button on "+i+" number");
        }
    }