JAva and URLs and ASP

I have a problem... i want to write a program that retrieves information from a specific web page, the following:
http://xxxxx::[email protected]/netcabo/defaultTrafego_IP.asp?pagina=trafego_m1_taxas.asp
as you can all see, its a login page.
In my browser, i fill the x's with my usr and pwd and put the URL and then the browser immediatly shows me the information i wan to retrieve.
I have downloaded a simple source code that shows html code from a URL, but that doesn't work with this URL. I suppose its because of the protocol for login procedure and stuff. What do i need to make to retrieve the html code for a URL like the above? If i can do this i can later parse the html easily...
thanks

this piece is what i needed:
String tempString = "usr:mypassword";
String encoding = new sun.misc.BASE64Encoder().encode(tempString.getBytes());
connection.setRequestProperty("Authorization", "Basic " + encoding);
so now I have the "username:[email protected]" kind of link...
i cannot use it directly, so i have to put taht as property...
thanks anyway

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