how to pass the hidden form values to the URL in java?

[Deepa Rajesh]

I want to get the HTML content of one webpage inside java class.The webpage is using some hidden form fields to be set for getting proper webpage.
I am using the java.net.URL class to call the webpage.

is it possible to set the hidden form fields in java itself?

final java.net.URL url = new java.net.URL( urlString );
        final java.net.URLConnection uconn = url.openConnection( );
        if ( !(uconn instanceof java.net.HttpURLConnection) )
            throw new java.lang.IllegalArgumentException(
                "URL protocol must be HTTP." );

Please help.

[Ivan Jozsef Balazs]

Hidden fields are transferred in the same way as text fields, also depending on whether the method is GET or POST.

[William Brogden]

I am using the java.net.URL class to call the webpage.

What do you man by "call the webpage"?

Form values, hidden or not, are formatted by the BROWSER into a HTTP request (GET or POST) which gets sent to a service.

Are you are trying to emulate a browser sending FORM values?

Bill

[Deepa Rajesh]

I have a client URL .I should call the URL and get the HTML Content of the page and i should process the html page content (listing the product details).

I can get the HTML Content of the page using HttpURLConnection.getContent();

But , the html content is differ if we send some hidden form fields. that is the case , i should send the form hidden field values using Java or servlet .I have only the client URL and the form name.