Sorry for the delay on this, i havent been on. Here is my code and hope this helps

public class ClassGoogleGeoLocationCallout {

@future (callout=true)  // future method needed to run callouts from Triggers
      static public void getLocation(id addId){
        // gather account info
        Address_vod__c a = [select Name, City__c, State__c,Zip__c, Latitude__c, Longitude__c, Country__c
        from Address__c
        where id =: addId];
        
        String address = '';
        if (a.Name != null)
            address += a.Name +', ';
        if (a.City_vod__c != null)
            address += a.City_vod__c +', ';
        if (a.State_vod__c != null)
            address += a.State_vod__c +' ';
        if (a.Zip_vod__c != null)
            address += a.Zip_vod__c +', ';
        if (a.Country_vod__c != null)
        address += 'USA';
 
        address = EncodingUtil.urlEncode(address, 'UTF-8');
         system.debug('=== ADDRESS ===' +address);
        // build callout
        Http h = new Http();
        HttpRequest req = new HttpRequest();
        req.setEndpoint('http://maps.googleapis.com/maps/api/geocode/json?address='+address+'&sensor=false');
        req.setMethod('GET');
        req.setTimeout(60000);
        
 
        try{
            // callout
            HttpResponse res = h.send(req);
             System.debug('====RESPONSE====' +res.getBody());
            // parse coordinates from response
            JSONParser parser = JSON.createParser(res.getBody());
            double lat = null;
            double lon = null;
            while (parser.nextToken() != null) {
                if ((parser.getCurrentToken() == JSONToken.FIELD_NAME) &&
                    (parser.getText() == 'location')){
                       parser.nextToken(); // object start
                       while (parser.nextToken() != JSONToken.END_OBJECT){
                           String txt = parser.getText();
                           parser.nextToken();
                           if (txt == 'lat')
                               lat = parser.getDoubleValue();
                           else if (txt == 'lng')
                               lon = parser.getDoubleValue();
                       }
                       System.debug('====LAT====' +lat);
 
                }
            }
 
            // update coordinates if we get back
            if (lat != null){
                a.AddressGeoLocation__latitude__s = lat;
                a.AddressGeoLocation__longitude__s = lon;
                update a;
            }
 
        } catch (Exception e) {
        }
    }
    
    static testmethod void testGeoLocation(){
        
        Account a = new Account (Name='TEST DATA');
        insert a;
        
        Address_vod__c add = new Address_vod__c
        (Name = '6 West',
        Address_line_2_vod__c = '',
        City_vod__c = 'Way',
        State_vod__c = 'NJ',
        Zip_vod__c = '07470',
        Country_vod__c = 'USA',
        Account_vod__c = a.id
        
        );
        
        insert add;
        
        StaticResourceCalloutMock mock = new StaticResourceCalloutMock();
        mock.setStaticResource('GoogleGeoLocationJson');
        mock.setStatusCode(200);
        mock.setHeader('Content-Type', 'application/json');
        
        // Set the mock callout mode
        Test.setMock(HttpCalloutMock.class, mock);
        
        // Call the method that performs the callout
      
        ClassGoogleGeoLocationCallout.getLocation(add.id);
        
    }
}