Detect and convert URL in String Java, Is regex better or even faster?

The bellow code detects and converts urls in String. Is there faster way or more elegant way to do this block of code?:

public static String detectAndConvertURLs(String text) {
    String[] parts = text.split("\\s");
    String rtn = text;
    for (String item : parts)
        try {
          // adjustment based one of the answers 
          Pattern p = Pattern.compile("((mailto\\:|(news|(ht|f)tp(s?))\\://){1}\\S+)");
          Matcher m = p.matcher(item);
          if( m.matches() ) item = m.group(1);

            URL url = new URL(item);
            String link = url.getProtocol() + "://" + url.getHost() + "/" + (url.getPath() == null ? "" : url.getPath()) + (url.getQuery() == null ? "" : "?" + url.getQuery());
开发者_如何学Python            rtn = StringUtils.replace(rtn, item, "<a rel=\"nofollow\" href=\"" + link + "\">" + link + "</a> ");
        } catch (MalformedURLException ignore) {
        }
    return rtn;
}

I think I would use regular expressions such as:

public static String detectAndConvertURLs(String text) {
   //Regex pattern (unescaped), matches any Internet URL: 
   //((mailto\:|(news|(ht|f)tp(s?))\://){1}\S+)
   Pattern p = Pattern.compile( "((mailto\\:|(news|(ht|f)tp(s?))\\://){1}\\S+)" );
   Matcher m = p.matcher( text );
   if( m.matches() ){
      return m.group(1);
   }else return null;
}

I just took that regex from this site of useful regex expressions:

http://regexlib.com/Search.aspx?k=URL

A quick google search will produce many regex expression resources:

http://www.google.com/search?q=regex+match+url&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-US:official&client=firefox-a

You might have to massage the regex a little to trim stuff at the beginning or end depending on your use.