高手请进!求教!

Question

URL u = new URL("http","http://www.aaa.com/bbb/ccc/ddd.xml","");
            u.openConnection();
            InputStream is = u.openStream();
            String line;
            BufferedReader in = new BufferedReader(new InputStreamReader(is));
            while((line = in.readLine()) != null)
            {
                System.out.println(line);
            }
            is.close();
            in.close();