Retrieving an ASP page from Java

[danorme]

I'm trying to get public domain info from a site I do not own. I have a Java program that makes a request for a web page, i.e.

http://www.dentoncad.com/property.asp?propertyId=R201208.

I parse that so I can make another request, i.e.

http://www.dentoncad.com/improvement.asp?numImp=1&currImp=1.

I figured out that I need to add a cookie so the site knows what property ID I am referring to.

The HTML my program receives from that request is missing the table with the info I want. But that request looks fine in a browser.

This looks like a measure to prevent people like me from doing things like that. Is this true? And does anybody know how to get around this?