A Java application can create and use URL's to anywhere; applets are restricted to URL's to their own web server.
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String urlStr = "http://www.npac.syr.edu/"; try { URL url = new URL( urlStr ); } catch ( MalformedURLException e ) { System.err.println( "Bad URL: " + urlStr );}
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A method URL.openConnection() returns an instance of class URLConnection:
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URLConnection conn = url.openConnection();
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conn.connect(); // open a connection
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Now use this URLConnection object to open a stream:
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new InputStreamReader( conn.getInputStream() ) );
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Applications can also use conn.getOutputStream(), but not applets.
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Note that one can connect not just to HTML files but also to CGI scripts and other web documents.
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