Question

I used below code to read sub context news from bbc site,but it is throwing UnknownHostException.Any hints please.

try {
            InetAddress addr = InetAddress.getByName("bbc.co.uk/news/");
            int port = 80;

            // This constructor will block until the connection succeeds
            Socket socket = new Socket(addr, port);
        } catch (UnknownHostException e) {
            System.out.println("exception is"+e);
        } catch (IOException e) {
        }

Answer 1

From the JavaDoc on InetAddress.getByName(...):

Determines the IP address of a host, given the host’s name.

In bbc.co.uk/news/ the host is bbc.co.uk with news being a subcontext as you already stated.

So change that to InetAddress.getByName("bbc.co.uk") or alternatively use the URL class, if you don’t have to use a Socket : new URL("http://bbc.co.uk/news/").openStream().