how to change the url string of URL object?

URL assigned a url while constructing the object, if you need a URL object that referes to someURL you like use something like

URL getNewURL(String spec)

{

return new URL(spec);

}

you can't chnage the URL since you contructed it for a fixed URL, goodLuck

MohdSleem at 2007-7-7 11:17:49 >

You can't change the URL object itself because it's immutable (well, for most intents and purposes anyway).

Of course you can point a reference of type URL to a new URL object, which is exactly what this solution does. However, it's important to note that the original URL object is not changed.

Herko_ter_Horst at 2007-7-7 11:17:49 >

Hi:

The answer is clear. I can not change the url string of a URL object. So in order to connect a different url, I must create a new URL object. This creates a problem. Some web site is session oriented. Afte you connect to the web site and you want to get more information from the web site, you must use the inital connection. The followings are problematic codes:

URL url = new URL("http://www.somesite.com");

URLConnection connection = url.openConnection();// Initial connection

InputStreamReader isr = new InputStreamReader(connection.getInputStream());

// then read the inital HTML

url = new URL("http://www.somesite.com/further_information.html");

connection = url.openConnection();// second connection

InputStreamReader isr = new InputStreamReader(connection.getInputStream());

// Instead of giveing me further information I want, the web site returns error "Invalid session.", because this is a new connection.

My question is that how to use inital connection to access the web page http://www.somesite.com/further_information.html? Thanks.

cyperhunt at 2007-7-7 11:17:49 >