Android : Delete all characters after the dot in a string

How to delete all the charather/ number after the . in a string

String i = "154.232";

I just want 154

Thanks

My Code:

distance = crntLocation.distanceTo(newLocation) / 1000; // in km

            double newKB = Math.floor(distance);

            String product_distance = String.valueOf(newKB);

            product_distance.replaceAll("\\..*", "");