public void getCoord(string a, string c, string z){
            Http h = new Http();
            HttpRequest req = new HttpRequest();

            a.replaceAll('\s+', '-');
            c.replaceAll('\s+', '-');
            z.replaceAll('\s+', '-');

            string param = a + '+' + c + '+' + z;
            system.debug('looking for coordinates');
            req.setEndpoint('https://maps.googleapis.com/maps/api/geocode/json?address='+ param +'&sensor=false');