url and name spaces java convertion.

I need to be able to convert:

(url) http://www.joe90.com/showroom

to

(namespace) com.joe90.showroom

I can do this using tokens etc, and a enforced rule set.

However, is there a way (a java package) that will do this for me? or do i need to write one myself?

Thanks

From stackoverflow

• java.net.URL url = new java.net.URL("http://www.joe90.com/showroom");
  String tokens[] = url.getHostname().split(".");
  StringBuilder sb = new StringBuilder();
  for (int i=0; i<tokens.length; i++) {
    if (i > 1) {
      sb.append('.');
    }
    sb.append(tokens[i]);
  }
  String namespace = sb.toString();
  

  Alternatively you can parse the hostname out.

  Pattern p = Pattern.compile("^(\\w+://)?(.*?)/");
  Matcher m = p.matcher(url); // string
  if (m.matches()) {
    String tokens[] = m.group(2).split(".");
    // etc
  }
  

  Of course that regex doesn't match all URLs, for example:

  http://username@hostname.com/...
  

  That's why I suggested using java.net.URL: it does all the URL validation and parsing for you.

  Tom Hawtin - tackline : What's with the -1?

  joe90 : to not put the . before the first entry..

• Your best bet would be to split the string based on the . and / characters (e.g. using Sting.split(), and then concatenate the pieces in reverse order, skipping over any you don't want to include (e.g. www)