Retrieving information from website

Hi

I have a very basic question regd retrieving information from website using
a scripting language:

Basically I am working on the development of a database where a user enters
an address (street, city, state, zipcode). Based on the user input of the
address, I need to dynamically determine the latitude and longitude of that
address from the internet. One such website was :
http://stevemorse.org/jcal/latlon.php where we enter the street, city, state
and zipcode etc and the webpage returns the latitude and longitude.

I need to retrieve this information and update the database accordingly. My
question is: Should this retrieval be done using Perl or Php or thru any
other language ? What wd be the best way to incorporate this into my Java
application ? Any help/hints wd be appreciated ! Thanks