Loading HTML page into a string variable

Hi.

I need help with javascript embedded into HTML. I want to create a HTML page (with Java) which loads another HTML page from a given URL into a string variable as pure text. Then I want to parse the page content using indexOf methods and finally to display only a short string found between two known substrings. The problem is that the external page uses cookies and the text I want to look for is loaded from cookies (the text itself is well visible in the browser window; in the HTML code it is a simple text outside the HTML tags). Is it possible to do this with Java? Thanks.